How To Unlock a Oppo Reno 9A Easily?
How To Unlock a Oppo Reno 9A Easily?
The Oppo series has made a significant splash in the smartphone market. It captivated users with its blend of innovative features and sleek design. The Oppo Reno 9A have recently been the go-to choice for people following the phone series. If you’re a proud owner of Oppo Reno 9A , this guide is your go-to reference for unlocking the full potential of your device.
It will cover various ways toperform a Oppo Reno 9A unlock, no matter the context of what you need unlocking for. This ensures you can enjoy every aspect of your shiny new Pixel to the fullest. Whether you’re a tech enthusiast or a casual user, these tips and tricks will help you master your Oppo device.
Part 1: Ways That Oppo Lets You Unlock Your Oppo Reno 9A
Oppo Reno 9A are more than just smartphones; they are gateways to a personalized and secure user experience. To access the myriad of features these devices offer, Google provides several unlocking methods, ensuring both convenience and security. Here are these options:
- A Personal Identification Number (PIN) is a simple yet effective way to secure your phone. It’s a numeric code that you enter on the lock screen. Setting up a PIN is straightforward via the Oppo Reno 9A device’s security settings, and unlocking your phone is as easy as tapping in the correct sequence of numbers.
- Similar to a PIN but potentially more secure due to the allowance of a longer combination of numbers and letters. A passcode is ideal for those who seek an extra layer of security. You set it up in the security settings and use it to unlock your phone just like a PIN but with the added complexity of alphanumeric characters.
- Face Unlock.Pixel’s Face Unlock uses advanced facial recognition software. It scans your face to grant access, offering a hands-free and quick way to unlock your Pixel. This feature can be activated in the security settings and requires a simple glance at your phone to unlock.
- Fingerprint Unlock. This method uses your unique fingerprint as a key. It’s fast, secure, and convenient. The Pixel 6a, 6, and 7 fingerprint scanners are actually under the display. Register your fingerprint in the settings, then touch the sensor to gain access.
- Pattern. If you prefer a more visual method, the pattern lock lets you draw a specific shape or pattern on the screen to unlock your phone. It’s a fun and interactive way to secure your device. Create your pattern in the security settings, and unlock your phone by replicating it on the lock screen.
In essence, each unlocking method offered by the Oppo Reno 9A provides a blend of security and ease. Whichever unlocking method you prefer, Google ensures that accessing your phone is secure and convenient. All you need to do is set up your preferred method in the Oppo Reno 9A device’s settings and use it to unlock your phone.
Part 2: What To Do if You Forgot Your Screen Unlock Method
Forgetting the screen unlock method on your Oppo Reno 9A , whether it’s a PIN, passcode, pattern, or encountering face or fingerprint recognition issues, can be a frustrating experience. Fortunately, there are methods to regain access to your device. This section will show you your options, from third-party tools to other methods like Safe Mode and force resetting.
Learn different ways to unlock a Oppo Reno 9A, from forgotten screen locks here.
Method 1: Wondershare Dr.Fone
Wondershare Dr.Fone is a comprehensive software suite that manages various aspects of your mobile device. It’s especially renowned for its ability to address common smartphone issues, including forgotten screen unlocks.
Dr.Fone offers a range of features, including data recovery, data transfer between devices, backup and restore functions, and a screen unlock feature. The Screen Unlock feature of Dr.Fone stands out for its ability to bypass your Oppo’s screen lock without losing data. It supports PIN, pattern, password, fingerprint, and face lock.
To do this, perform the steps below:
- Step 1: Download and install Dr.Fone on your computer. Then, connect your Pixel phone to it with a cable.
Step 2: Go to Toolbox > Screen Unlock. Then, use a connector to connect your Pixel device to the PC.
- Step 3: Select Android on this page.
- Step 4: Choose Unlock Android Screen, and select your phone’s brand (Google) in the following brand list.
- Step 5: Now, choose Remove without Data Loss.
- Step 6: Ensure the correctness of your device details. Then, type in “000000” to proceed.
- Step 7: Follow on-screen instructions to put your device into download mode.
- Step 8: Click Done after the process has finished.
Tips: Is your Pixel locked accidently? Are you searching for a powerful tool? No worries as Dr.Fone is here to help you. Download it and start a seamless unlock experience!
Method 2: Entering Into Safe Mode
Safe Mode is a diagnostic mode in Android that can help bypass third-party lock screen apps. It’s useful if you’ve used a third-party app for your lock screen.
To do this, press the power button, then long-press on the Power off option. Tap OK when Reboot to safe mode option appears. In Safe Mode, third-party apps are disabled. Thus, you can now access your device if a third-party app is causing lock issues.
Method 3: Force Resetting a Device/Flashing a New ROM
Force resetting or flashing a new ROM can be considered a last resort. They involve erasing all data on your device or installing a new operating system.
- Force resetting your device. To force reset your Oppo, press and hold the Power and Volume Down buttons simultaneously to enter recovery mode. Use the volume buttons to navigate to Wipe data/factory resetand select it with the power button. This will get rid of existing password locks.
- Flashing a new ROM. This is more complex and typically requires downloading a new firmware and flashing tool. It’s only recommended for advanced users or as a last resort.
Remember, while these methods can effectively unlock your device, they also come with risks. Always back up your data regularly, and use these methods responsibly, considering their potential to erase your data or affect your device’s warranty.
Bonus: How To Perform a SIM Unlock on Oppo
Unlocking the SIM on your Oppo, particularly the Oppo Reno 9A , opens up a world of flexibility, especially for those who frequently travel or wish to switch carriers. This process can be accomplished for free through your carrier, provided certain conditions are met. Dive into the steps and considerations for performing a SIM unlock on your Oppo.
Understanding the Prerequisites
Before proceeding with the SIM unlock, ensure you’re in good standing with your carrier. This means:
- No outstanding bills.
- Your contract for the phone has expired.
- The device has been in your possession for at least 60-90 days.
Different carriers have varying requirements for a SIM unlock, so your first move should be to contact them for specific details.
Steps for SIM Unlock Through Your Carrier
Here are the steps to SIM unlock your Oppo Reno 9A,These generally involve the following steps but are still subject to the official instructions of your carrier:
- Step 1: Open the Phone app and dial *#06# on your Oppo. This will display your phone’s IMEI number. Note this number down for future reference.
- Step 2: Call your carrier and request a SIM unlock code. You’ll likely need to provide your Oppo’s IMEI number.
- Step 3: If you meet your carrier’s requirements, they will email you the SIM unlock code within 2-5 days.
- Step 4: Once you receive the code, replace your current SIM with one from a different carrier. When prompted, enter the SIM unlock code you received via email.
Alternative Method: Android SIM Unlock
If your carrier cannot unlock your Oppo Reno 9A ’s SIM, or if you prefer a quicker solution, consider using network unlocking services. This may be websites like UnlockBase, Mobile Unlocks, etc.
This generally involves the following steps:
- Step 1: Like the previous method, retrieve your IMEI number by dialing *#06# on your Pixel.
- Step 2: Go to the Android SIM unlock provider’s website and enter your device’s IMEI number.
- Step 3: Follow through with the checkout process, providing payment and contact information.
- Step 4: Once the payment is processed, you’ll receive the unlock code via SMS or email. Insert a SIM from a different carrier into your Pixel, then enter the received unlock code when prompted.
By following these steps, you can successfully unlock the SIM of your Oppo device, ensuring you can enjoy your phone with the carrier of your choice, wherever your travels may take you.
Important Considerations
Remember, unlocking the SIM doesn’t absolve you from your carrier contract. You’re still obligated to make timely payments as per your agreement. The primary advantage of unlocking your SIM is the freedom to use your Oppo Reno 9A with any carrier’s SIM card, offering greater flexibility and control over your mobile experience. Thus, it is encouraged not to do anything illegal to avoid future complications.
Conclusion
This article explored various methods to unlock Oppo Reno 9A,It delved into standard unlocking features like PIN, passcode, face and fingerprint recognition, pattern unlock, and how to handle situations where you forget your screen unlock method. It also highlighted that learning to unlock your screen, especially on Oppo phones, is crucial to ensure continuous access to your device.
Wondershare Dr.Fone is a reliable tool for those challenging moments when you forget your passcode. It offers a straightforward solution for screen unlocking and ensures you keep your phone functional and handy at all times.
6 Proven Ways to Unlock Oppo Reno 9A Phone When You Forget the Password
Smartphones are mushrooming in today’s world, and it is like everybody is using these kinds of phones. Android phones are the most popular phone used by millions of users across the globe. As an Android user, I am sure you are keen to protect the data on your phone or prevent an unauthorized person from using it. One method to protect your phone data is to lock your phone screen. This is a good feeling since you will be the only one accessing your phone since you may not share the password with your child or even your spouse.
Unfortunately, this usually ends up forgetting the Android lock password. You may enter all the passwords you know, and your phones get locked. What will you do? In this article, we will learn how to unlock Android forgotten passwords in six ways.
You can watch the video above about how to unlock your Android Phone!
Way 1. Try Face or Fingerprint to Unlock Oppo Reno 9A Phone
How to unlock your phone when you forget the password? If you’ve forgotten your Android phone’s password, the best way to unlock it is to use your device’s built-in biometric authentication features, such as face unlock or fingerprint unlock.
Face unlock uses your device’s front-facing camera to recognize your face and unlock your phone. And fingerprint unlock uses your device’s fingerprint scanner to recognize your fingerprint and unlock your phone. Both of these methods are very secure. And they can quickly and easily unlock your phone without having to remember your password.
However, you must use the face or fingerprint unlock correctly on your Android phone. The tips below can prove helpful:
- Step 1: Make sure your face or fingerprint is registered correctly on the Oppo Reno 9A device.
- Step 2: Make sure the lighting is adequate and your face is clearly visible.
- Step 3: Make sure the distance between your face and the camera is not too far.
- Step 4: Make sure your finger is clean and dry before putting it on the fingerprint sensor.
- Step 5: Try to use the same angle and position of your face or fingerprint every time.
- Step 6: Try to use the same lighting conditions each time you use the face or fingerprint unlock.
- Step 7: Make sure your device is up to date with the latest security patches.
- Step 8: Make sure that your device is not rooted or running any custom ROMs.
If you are still unable to unlock your device, you may need to follow the solutions below.
Way 2. Unlocking Forgotten Password on Android Phones Using Dr.Fone Screen Unlock
Dr.Fone is an all-in-one tool that allows you to completely recover lost files from your Android device and unlock Android forgotten passwords. This cross-platform software can unlock a phone on which you forgot the Android password. This inbuilt feature allows you to remove the Android forgotten password while safeguarding your Android device’s data files. Above all, as the best phone unlocking software , it is cost-effective and easy to use.
- It can remove 4 screen lock types - pattern lock , PIN, password & fingerprints.
- No tech knowledge asked everybody can handle it.
- Work for Samsung Galaxy S/Note/Tab series, LG G2/G3/G4 , Huawei, Xiaomi, Lenovo, etc.
Dr.Fone - Screen Unlock (Android)
The Best Tool to Unlock Android Phone Forgot Password Without Any Hassle!
- Completely unlinked from the previous Google account, it won’t be traced or blocked by it anymore.
- Remove all Android screen locks (PIN/pattern/fingerprints/face ID) in minutes.
- Bypass Android FRP lock without a PIN or Google account.
- Provide specific removal solutions to promise good success rate.
4,008,669 people have downloaded it
Attention: When you use it to unlock Huawei , Lenovo, and Xiaomi, the only sacrifice is that you will lose all the data after unlocking.
Well, in a few minutes, you will unlock your Android phone’s forgotten password with ease. First, download Dr.Fone and install it on your computer. Thereafter launch it and follow these steps.
Step 1. Select the Unlock Android Screen Option
Once you have opened the program, select the “Screen Unlock” option directly. Next, connect your Android-locked phone and click on the “Unlock Android screen” button on the program window.
Step 2. Select Your Device Brand
After this step, you will be guided to another screen where you need to choose the brand of your device.
Step 3. Enter Download Mode
You will need to put your device into Download Mode for unlocking. Depending on your device’s brand and model, the instructions for doing so may vary.
Step 4. Observe the Unlock Process
The screen displays the progress of unlocking, downloading drivers and configuration files. Once the entire process is complete, you will be able to access yours forgot password Android device without having to enter any passwords.
Way 3. Use Google Find My Device to Remotely Unlock Your Android Phone
You can use Google Find My Device to unlock your Android phone remotely with another Android phone. All you need is the Google account and its password bound to unlock Android phone forgotten password.
Note: You must have enabled Find My Device on your device before proceeding.
- Step 1: Open the Find My Device app or visit android/find .
- Step 2: Sign into your Google account.
- Step 3: You can select the Oppo Reno 9A device you want to unlock and tap on the “Unlock” button.
- Step 4: Your device will then be unlocked.
Please remember that this feature is only available for Android 5 and above in case Android forgot password.
Way 4. Reset Your Android and Remove the Password Using “Forgot Pattern” (Android 4.0)
There are several ways that you can reset Android after you forgot your password. You can reset using a google account or perform a factory reset.
This feature is available on Android 4.0 and older versions. So if you are using Android 5.0 and above, you can opt for the Screen Unlock tool or other ways as mentioned in this article.
- Step 1. Enter the wrong pin on your android phone five times.
- Step 2. Next, tap on “Forgot Password.” If it is a pattern, you will see “Forgot Pattern.”
- Step 3. It will then prompt you to add your Google account username and password.
- Step 4. Bravo! You can now reset your password.
Way 5. Factory Reset Your Android and Remove Password
If you are not successful with the above method, you can opt to perform a factory reset. This method should be the last option since you will lose data that has not been synced to your Google Account. It is wise to remove your SD card before performing the Android reset.
You can unlock your Android phone, i.e., Samsung, Oppo, or Vivo, by factory resetting it with these steps:
- Step 1. Turn off your Android phone.
- Step 2. Hold the Volume (-) and Power/Side buttons simultaneously.
- Step 3. When the phone vibrates, release the Power button and hold the Volume Down button.
- Step 4. Use the Volume (-) button for the “wipe data/factory reset” option. Then press the Power/Side button to confirm.
- Step 5. Tap the “Yes – delete all user data” option and the Power button to confirm.
- Step 6. After the reset, select “reboot system now” and tap the Power/Side button to restart your device.
- Step 7. Your phone will now be unlocked, and the password will be removed.
Way 6. Unlock Samsung Phone with Samsung’s Find My Mobile
The best way to unlock Android forgot password on Samsung is to use Samsung’s Find My Mobile service. This service allows you to remotely unlock your device, reset the lock screen password, and even disable the lock screen altogether.
- Step 1: To use this service, you must first log into your Samsung account on a computer or mobile device;
- Step 2: Once logged in, you can locate your device, select the “Unlock” option;
- Step 3: Enter your new password. Once unlocked, you can access your device with your new password.
FAQs About Android Unlock
1. Is there any universal code to unlock the Android phone?
No, there is no universal code for unlocking Android phones. They are different from stable SIM pins. Due to mobile device security, only users themselves can set up a unique password on their Android phone. So, it’s impossible to unlock an Android phone with a so-called universal code.
2. How to reset your Android phone password after the unlock?
- Step 1: Open your Samsung phone and go to the Settings menu.
- Step 2: Select the Lock Screen and Security options.
- Step 3: Select Screen Lock Type.
- Step 4: Select the Password option.
- Step 5: Enter your current password, then tap Continue.
- Step 6: Enter your new password twice, then tap OK.
- Step 7: Your new password will now be in effect.
3. Don’t you have face or fingerprint unlock? Let’s set them up.
- Step 1: Go to the Settings app on your Samsung phone.
- Step 2: Tap on the “Lock Screen” option.
- Step 3: Select “Screen Lock Type.”
- Step 4: Choose the “Fingerprints” or “Face unlock” option.
- Step 5: Follow the instructions on your screen to set up the desired unlock feature.
- Step 6: When you’re finished, you’ll be able to unlock your phone using either your fingerprint or your face.
4. How to unlock an Android phone without data loss?
There are several ways how to unlock Android phones without data loss . One of the most recommended ways is that you can set up the method to unlock with a fingerprint or face. Because it has an official guarantee, and you don’t need professional skills. Moreover, if your phone has Android version 4.0 or even older, unlocking your phone via “Forgot Pattern’ will also help you finish the goal.
The methods discussed above in Way 1 or Way 2 can guide you better into unlocking your device using this tool.
Conclusion
To conclude, when you have an Android Password forgot the phone at hand, this guide can offer you several useful perspectives. However, it is advisable to perform Android password recovery using Dr.Fone - Screen Unlock (Android) . This software is fast, safe, and ensures that you have a better phone experience.
How to Reset your Oppo Reno 9A Lock Screen Password
Android phones have the option of locking the screen using a PIN, pattern, or password. This is meant to keep the phone secure and prevent any unwanted intrusion. PINs and patterns are somewhat easy to remember, but it is common to forget the Android lock screen password. The phone gets locked if someone consecutively enters the wrong password multiple times. Then it is a common question to ask, “How to reset your Android password?”
The device becomes inaccessible and requires an Android password reset. But there is no easy way to do that. Either one needs their Gmail account or has to forget about getting back the Android data. Today we will deliver how to reset Android passwords and teach 6 useful ways. They can be used to reset the Android password and use the phone again. But if someone has to perform a factory restore, they need to depend on backups to get back the data. Now let’s begin with the first way and learn how to reset your Android phone password.
safe & secure
Solution 1: Dr.Fone - Screen Unlock (Android): A Direct Way to Unlock the Phone
Using Dr.Fone - Screen Unlock (Android) is a direct way to Android reset the password and unlock the phone. There is no tension of data loss, and this phone unlocking software works for different lock systems. It can reset the Android password, pattern, PIN, and fingerprint lock in under 5 minutes. It is straightforward to operate and does not require any technical knowledge.
Wondershare offers you 100% security as it only authorizes you access. It is simple and user-friendly and keeps all the data on the Android device (Samsung and LG only) intact.
Dr.Fone - Screen Unlock (Android)
Get into Locked Android Phones Within Minutes
- 4 screen lock types are available: pattern, PIN, password & fingerprints.
- Easily remove the lock screen; No need to root your device.
- Unlock 20,000+ models of Android phones & tablets.
- Provide specific removal solutions to promise good success rate
4,008,669 people have downloaded it
How to reset an Android phone password with Dr.Fone - Screen Unlock (Android)
Step 1: Select “Screen Unlock”
Open the program. After that, select and click on “Screen Unlock” on the right side of the window. With this option, you can Android reset your password and remove the lock screen of PIN, password, pattern, and fingerprints.
Now get the Android phone connected to the PC and select the Oppo Reno 9A device model in the list to proceed.
Step 2: Activate download mode
You have to put your device into download mode. For that, follow the instructions given by Wondershare:
- 1. Switch off the Android device
- 2. Tap and keep holding the volume decrease button along with the power and home button simultaneously
- 3. Now tap the volume increase button to initiate download mode
Step 3: Download the recovery package
After the download mode has been entered, the program will begin to download the recovery package automatically. You have to hold your horses until it is complete.
Step 4: Remove the Android password without data loss
Soon the recovery package finishes downloading. Then the program begins to remove the lock screen. After the process is over, you can access all your data on your Android device and reset your Android password.
These simple steps will ensure that you can secure your Android lock screen easily, without any worries. You do not have to worry about data loss, and you will reset your Android phone. Even if you have forgotten your Android password and are thinking about starting your Android phone again, these simple tips will help.
Solution 2: How to reset Android Phone Password with Smart Lock?
Setting up Smart Lock on your Android device adds a convenient and straightforward method for unlocking your screen. Smart Lock provides different alternatives to bypass the lock screen based on specific situations.
These alternatives encompass trusted locations, connected devices, or facial recognition. For devices operating on Android 14, it’s now referred to as Extend Unlock. Here’s a guide on utilizing Smart Lock to unlock your Android device:
Step 1. Set a pattern, PIN, or password for your screen lock if you haven’t already. Open the Settings on your Android device and tap on “Security & Privacy.” Here, tap “More Security & Privacy” and select “Trust agents.”
Step 2. Within “Trust agents,” toggle on “Extend Unlock” and then return to the previous screen. Select “Extend Unlock” and input your pattern, PIN, or password to confirm. Next, pick your desired Smart Lock type and follow the on-screen prompts to activate.
Solution 3: How to Unlock Samsung Phone with SmartThings?
Unlocking an Android phone using SmartThings is an option available for Samsung devices. SmartThings offers remote control and management of Samsung devices. It also includes the ability to unlock your phone under specific conditions. Here’s a general guide on how to use SmartThings to unlock your Samsung phone:
Step 1. Access the SmartThings website, where you should click on the “Sign In” button. Now log in using your Samsung Account, and you’ll be directed to a new screen displaying a map pinpointing your phone’s location.
Step 2. Select the “Unlock” button located in the top right corner of the menu. Then, proceed by clicking “Unlock,” and entering your Samsung password. Finally, confirm by clicking Unlock once more. This action will reset all your lock settings, comprising biometric security, PIN, password, and swipe pattern.
Solution 4: How to Reset Android Password using Google?
To reset the Android password using Google, it is necessary to remember the Google password and ID. Google account must also be activated on the phone. Also, this method only works on devices running Android 4.4 or below. Follow the steps below for the Android password reset.
Step 1: Access Google login
Enter the wrong password 5 times till the Android device gives you a “Forgot password?” prompt. Click on the tab and choose “Enter Google Account details.”
Step 2: Enter credentials and do an Android reset password
Now enter the Google ID and password and log in. You will be able to Android reset your password and get access to your phone.
Solution 5: How to Reset Android Password using Android Device Manager?
Familiar with Android Device Manager? Well, it has been renamed now as Find My Device. This service provided by Google helps you find, lock, or wipe your Android device. Plus, if you have enabled Find My Device, it might prove very helpful to assist you in unlocking your device. Check out these easy-to-follow steps for unlocking your Android device. For this, you need to use Find My Device, the upgraded Android Device Manager:
Instructions. On a computer or another device, go to the “Google Find My Device ” website. Here, sign in using your Google account linked to the locked Android device. Once you’ve logged in, the website will present a map revealing the most recent location of your device. Next, navigate to the left side and select “Erase Device.” Follow the prompts on the screen to finalize the process.
Solution 6: How to reset Android Phone Password using Factory Reset?
This method can be used when no other means of Android password reset works. This will erase all your data, so it is better to have backups created before. Now perform the steps to Android reset the password.
Step 1: Initiate factory restore.
Turn your Android device off. Press and hold the power button + home button + volume up button. This will bring up the recovery mode to initiate factory restoration.
Step 2: Factory restore
Now use the volume +/- button to navigate to the “Wipe Data / Factory Reset” option and press the power button to select it. Wait till the process complete.
Step 3: Reboot and reset the password.
From the available options, choose “Reboot System Now.” After the Android device powers on, you will be able to do the Android password reset.
Bonus Part: Useful Tips to Prevent Future Lockouts on Android
Here are some helpful tips to prevent future lockouts on your Android device and ensure better password management.
- 1. Use Password Managers: Consider using reputable password manager apps that securely store and manage your passwords. These apps often have features to generate strong, unique passwords for different accounts and help you remember them.
- 2. Set up Biometric Authentication: In case your device supports it, use biometric authentication methods for a better experience. These can be fingerprints or facial recognition. These methods can be more convenient than remembering passwords and offer added security.
- 3. Create Memorable Passwords: If you opt against using a password manager, craft robust yet easily remembered passwords. To improve your security, try to use a sequence of lowercase and uppercase letters, numbers, and symbols. Plus, avoid easily guessable details like birthdays or common phrases to make your password strong.
- 4. Enable Two-Factor Authentication (2FA): Enable two-factor authentication whenever possible for your accounts. Likewise, this provides an added layer of security by requiring a secondary verification method. It could be a text message code or authentication app in addition to your password.
- 5. Regularly Back Up Your Data: Make it a habit to consistently back up your device data . To prevent potential data loss from forgotten passwords or unexpected issues, take precautions. Safeguard your crucial data by creating backups, whether in the cloud or on an external storage device.
Conclusion
This article guided all the possible ways available in 2024 to reset your Android lock screen password, such as using the Smart Lock, Google Find My, Samsung SmartThings, and Wondershare Dr.Fone - Screen Unlock (Android). The most recommended method out of these methods is Dr.Fone because it can handle all Android brands without restrictions.
On the other hand, other methods have their limitations. For example, SmartThings can only work for Samsung smartphones. Moreover, Wondershare Dr.Fone - Screen Unlock (Android) is compatible with Android 14 and can unlock the screen within 2 minutes.
- Title: How To Unlock a Oppo Reno 9A Easily?
- Author: Aaron
- Created at : 2024-09-11 05:46:18
- Updated at : 2024-09-13 05:20:45
- Link: https://easy-unlock-android.techidaily.com/how-to-unlock-a-oppo-reno-9a-easily-by-drfone-android/
- License: This work is licensed under CC BY-NC-SA 4.0.