6 Proven Ways to Unlock Tecno Spark 20 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 Tecno Spark 20 PhoneHow 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 Tecno Spark 20 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 Tecno Spark 20 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.
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.
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 Unlock1. 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.
- 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.
Top 12 Prominent Tecno Spark 20 Fingerprint Not Working Solutions
## Part 1. Optimal Solution: Unlock With Wondershare Dr.Fone DirectlyFacing a malfunctioning fingerprint on your Tecno Spark 20 can be frustrating. In this scenario, the most effective resolution is the removal of the registered fingerprint. Yet, traditional methods of removing the fingerprint can be difficult and pose security risks. In this case, going for tools like Wondershare Dr.Fone is the best choice. This tool ensures your Pixel device is at no risk.
Dr.Fone offers a swift solution to remove the Android lock screen in five minutes. It effectively removes 4 types of screen locks. These include patterns, PINs, passwords, and fingerprints. Dr.Fone can bypass the Android FRP lock without needing a PIN or Google account. It ensures accessibility to the Android device without such credentials.
Dr.Fone - Screen Unlock (Android)
The Best UnlockJunky Alternative to Bypass FRP and Solve Your Screen Locks
- Remove all Android screen locks (PIN/pattern/fingerprints/face ID) in minutes.
- Bypass the FRP lock of Samsung without a PIN or Google account.
- Everyone can handle the lock screen without any tech knowledge.
- Provide specific removal solutions to promise good success rate.
4,008,672 people have downloaded it
Prominent Features of Wondershare Dr.Fone
- FRP bypass is enabled for brands like Samsung, Xiaomi, Redmi, Oppo, Realme , and Vivo.
- With Dr.Fone, bypassing screen locks can be achieved without data loss.
- Fone supports 2000+ Android phones and tablets from over 18 brands for screen unlocking.
Step-by-Step Guide To Remove Fingerprint Type Lock on Google Pixel Using Dr.Fone
With Dr.Fone, you can resolve the Tecno Spark 20 fingerprint sensor not working issue within minutes. Below is a detailed walkthrough for removing a fingerprint lock on a Google Pixel:
- Step 1: Connecting and Accessing Screen Unlock Feature on Dr.Fone
Open Wondershare Dr.Fone and connect your Android device via a USB cable. Once the connection is established, navigate to the “Toolbox” tab and choose “Screen Unlock.” Upon reaching the new screen, choose the “Android” option. Then, select “Unlock Android Screen” from the options on the following screen.
- Step 2: Selecting Google As the Tecno Spark 20 device Brand and Activating Recovery Mode
Afterward, you’ll be guided to a subsequent screen prompting you to choose the Tecno Spark 20 device brand, Google. Once you select the brand, you’ll be directed to enter a specific mode corresponding to it. For Google Pixel Devices, the specific mode to enter is Recovery Mode. Simply follow the on-screen instructions to activate Recovery Mode on your device.
- Step 3: Initiate the Fingerprint Removal Process
After entering Recovery Mode, the screen unlocking procedure will initiate automatically. Please wait for the fingerprint removal process to finish. In case of failure, select “Try Again” to attempt unlocking again. Upon successfully unlocking your Android device’s screen, tap “Done.”
## Part 2. 11 Conventional Solutions To Resolve Pixel Fingerprint Not WorkingThe solution above using Wondershare Dr.Fone is an effective and comprehensive method. It can tackle fingerprint recognition issues, but sometimes, users may look for simpler alternatives. We will explore conventional solutions that can address Pixel fingerprint problems. Each solution will also explain the underlying reasons for the Pixel 6 fingerprint sensor issue.
### 1\. Fingerprint Sensor Not Touched FirmlyProblem
If the fingerprint sensor fails to recognize your fingerprint, it might be due to inadequate pressure. This could also be due to improper finger placement on the sensor.
Solution: Firm Placement
Ensure you firmly place your finger on the sensor, covering it entirely. Avoid too much pressure, but make sure the sensor fully contacts your fingerprint.
### 2\. Device Showing GlitchesProblem
Glitches or software bugs in your Pixel device may cause disruptions. This can include issues with the fingerprint sensor’s functionality. These problems can range from minor issues to severe software glitches.
Solution: Restart Your Pixel Device
One of the easiest and simplest solutions is to restart your Pixel phone. You can do that by pressing the “Power” and the “Volume Up” keys. It will lead to a pop-up power menu where you must choose “Restart” to reboot your device.
### 3\. Outdated FirmwareProblem
An outdated operating system or firmware can lead to compatibility issues. This can lead to malfunctioning features like the Pixel 6A fingerprint sensor not working.
Solution: Check for Updates
The best way to resolve this issue is to update your Pixel device. Having an outdated version of Android OS can lead to an accumulation of bugs and glitches. Moreover, it can seriously affect the Tecno Spark 20 device’s performance, causing many issues. Here is how to check and update your Pixel phone:
Instructions. On your Pixel device, access the “Settings” app. Within Settings, scroll down to tap the “System” option. On the following screen, hit the “System update” option to check if any latest update is available. Here, if you see any updates, download and install them promptly. Before initiating the update, ensure your device is connected to a stable Wi-Fi network with sufficient battery charge.
4. Dirty Phone or Sensor
Problem
Accumulated dirt, dust, or residue on the phone or fingerprint sensor can cause obstruction. This can lead to the failure to properly recognize your fingerprint.
Solution
1. Cleaning the Phone
Employ a gentle, dry microfiber cloth for wiping down the complete surface of your Pixel device. Take particular care to thoroughly clean the region surrounding the fingerprint sensor. Refrain from utilizing rough substances or strong chemicals as they could potentially cause harm to the Tecno Spark 20 device.
2. Fingerprint Sensor Cleaning
Gently wipe the fingerprint sensor area using a clean, dry cloth to ensure thorough cleaning. For better results, consider using a dampened cotton swab with water or isopropyl alcohol. Before using it again, ensure the sensor is entirely dry.
3. Compressed Air or Soft Brush
Use compressed air or a soft brush if there’s visible debris or particles around the sensor. Be cautious not to apply excessive pressure that might damage the sensor.
### 5\. Screen Protector: Dirty or DamagedProblem
A smudged or impaired screen protector might disrupt the working of the fingerprint sensor. This can potentially cause it to fail to recognize your fingerprint.
Solution
1. Clean the Screen Protector
Start by effectively cleaning the screen protector on your Pixel device. For a thorough cleaning, consider utilizing a screen cleaning solution. Ensure that the screen protector is free from any dirt or debris.
2. Replace Damaged Protectors
Is the screen protector visibly damaged, scratched, or peeling off? If yes, consider replacing it with a new one. Damaged protectors can hinder fingerprint recognition and compromise device protection.
3. Check Compatibility
Ensure the screen protector is designed to be compatible with fingerprint sensors. Some protectors may obstruct or interfere with the sensor’s functionality.
4. Remove Air Bubbles
There can be air bubbles trapped under the screen protector. If there are, gently press them out towards the edges using a card designed for this purpose.
6. Clean Your Finger
Problem
The problem may lie with your fingers rather than the Tecno Spark 20 device. Unclean or moist fingers can hinder accurate fingerprint recognition on the sensor, causing the Tecno Spark 20 fingerprint sensor to not work.
Solution
1. Cleanse and Dry Your Hands
Remove any dirt, oil, or moisture that might cause issues with the fingerprint sensor. It’s crucial to wash and thoroughly dry your hands. Additionally, verify that your fingers are entirely dry before engaging the sensor. The reason is any moisture or dampness may cause inaccuracies in fingerprint identification.
2. Avoid Oily or Greasy Substances
Refrain from touching oily or greasy surfaces before using the fingerprint sensor. These substances can transfer onto your fingers, affecting sensor accuracy. If your fingers are dirty or damp, pause to clean them using a dry, clean cloth.
### 7\. Covering Screen if Fingerprint on ScreenProblem
Fingerprint marks or smudges on the screen might disrupt sensor functionality. This leads to inaccurate recognition when you try to unlock your device.
Solution
1. Avoid Covering the Sensor Area
Be cautious while cleaning the screen to avoid covering or smudging the area around the fingerprint sensor. Precise cleaning around this area prevents interference with sensor functionality.
2. Use Proper Holding Technique
While holding the Tecno Spark 20 device, avoid placing your fingers or palms over the fingerprint sensor. Opt for holding the Tecno Spark 20 device to minimize accidental contact with the sensor area.
### 8\. Fingerprint Sensor Not VisibleProblem
Misconfigured settings on your Pixel device can lead to situations where the fingerprint sensor is not visible. It can lead to scenarios where the Tecno Spark 20 device fails to recognize your screen unlocking attempt.
Solution: Adjust the Setting To Consistently Display the Sensor
You must adjust the display settings to ensure the fingerprint sensor is always visible. To do that, you can begin by opening the Settings app. Navigate to the “Display” tab and select “Lock Screen.” On the following window, toggle on “Always show time and info.”
### 9\. Low Touch SensitivityProblem
The fingerprint sensor may have low touch sensitivity . It can lead to difficulties in accurately recognizing fingerprints, leading to Tecno Spark 20 fingerprint not working.
Solution
1. Adjust Sensitivity Settings
Accessories like a screen protector might impact the performance of your Pixel device’s touch sensitivity. When using a screen protector, your Pixel enhances touch sensitivity. To do that, navigate to the Settings app and open it. Move to the “Display” window and scroll down to the last option. Toggle on the “Screen protector mode” to increase the screen sensitivity.
2. Finger Re-Enrollment
Delete existing fingerprints and re-register them. This re-enrollment can sometimes improve sensitivity and help remove the issues. Here is how you can delete and re-enroll your fingerprint:
- Step 1. In the Settings app of your Pixel, tap “Security & Privacy.” Then, press “Device Unlock” and choose “Fingerprint Unlock.” The device will now ask you to provide your device PIN or password.
Problem
Persistent fingerprint sensor problems might indicate underlying hardware issues . This could go beyond common troubleshooting and might require professional help.
Solution
1. Inspect for Physical Damage
Thoroughly examine your Pixel device for any physical damage. These include cracks, dents, or scratches around the fingerprint sensor area. Physical damage could affect the sensor’s functionality.
2. Safe Mode Check
Boot the Tecno Spark 20 device in safe mode to determine if third-party apps are causing conflicts. To do that, press the “Power” key with any volume key to access the power menu. Afterward, long-press the “Power Off” option until the “Reboot to Safe Mode” option appears on your device’s screen. Press “OK” to reboot into Safe Mode and test the fingerprint sensor’s functionality.
3. Professional Assessment
If you suspect hardware issues, seek professional help from authorized service centers. A clear sign of hardware issues can be visible damage or the sensor failing to function even in safe mode.
11. Factory Reset as Last Resort
Problem
Did all other troubleshooting methods fail to resolve persistent fingerprint sensor issues? Then, a factory reset might be required to revert the Tecno Spark 20 device to its original settings.
Solution
1. Backup Data
Before initiating a factory reset, ensure that all crucial data is safeguarded. This encompasses contacts, photos, documents, and any other significant files. Use Google’s backup services or third-party apps to securely back up your data .
2. Initiating Factory Reset
Proceed with the following steps to execute a factory reset on your Pixel device:
- Step 1. On your Pixel smartphone, navigate to Settings and access the “System” tab. Here, scroll down to the bottom and tap “Reset Options.”
Nowadays, the security mode is enabled in almost all digital devices, which is the case with our smartphones. However, when we repeatedly change our password, we might be in a state of confusion to remember it. Such instances are highly schemed to lock our messages, galleries, emails, and other personal storage. Using the locking pattern enhances security, and thus, apart from the known user of the Tecno Spark 20 device, unknown people cannot access your Android phone. To overcome this critical situation, we have this article to help you unlock your Android devices by removing or bypassing the swipe lock Android screen. The solutions provided in this article are easily accessible to all users and are easy to operate.
So, if you have ever been stuck due to a lock code, go through the article to resolve the issue and swipe up to unlock a password that somehow gets forgotten.
## Part 1: How to disable Swipe Screen to unlock when you can access the phone?Some people do not pay much attention to their privacy and will not bother locking their Android devices. They would disable the swipe screen to unlock their devices. Thus, this section will talk about the basic solution to disabling the swipe up to unlock Android devices. Our main focus here is on a disabling method of swiping the screen when your Android device is accessible.
Let us look at the detailed steps below to remove the swipe screen to unlock the Android phone.
Step 1: To begin with, touch the gear icon (that is setting) on the main screen of your Android phone. The settings screen will display directly since it is a shortcut to get in. You will get a drop-down menu where you will see many options are available for your flexibility.
Step 2: Out of those, choose the “Security” tab to access your further.
Step 3: It will prompt the tab as “Screen security,” You will be listed with three choices, namely, Screen lock, Lock screen options, and Owner Information.
Step 4: Select the option called “Screen lock,” The next step is to enter your PIN code for security purposes. This step is carried out in Android phones to ensure you are the original owner of the Android device.
Step 5: If you click the PIN code option again, the drop-down menu will be listed with more options. Now select the option “None.”
That’s all. You have successfully run out of the disable commands for the swipe up to unlock the screen. You can now open and access your device without any security methods.
## Part 2:How to remove/bypass Swipe to unlock when the phone is locked?To unlock your device, the only solution is to follow the Dr.Fone - Screen Unlock (Android) . If you are looking to unlock the screen when the phone is locked, then this method solidly proves to bypass swipe lock Android when it is locked. It helps to resolve this issue by bypassing or removing the swipe screen without causing any loss to your data. This tool temporarily supports bypassing Android screens without data loss on Samsung and LG. As for other Android phones, all the data will disappear after unlocking with this tool.
The features of this Dr.Fone software are many. It gives a solution to four lock methods: a pin, pattern, fingerprint, and password. It is user-friendly, and even a user with no technical information can also use it with no issue. This tool is only limited to remove the screen lock on Samsung and LG without losing data. Your data will still be wiped out on other Android phones after using this tool.
### [Dr.Fone - Screen Unlock (Android)](https://tools.techidaily.com/wondershare-dr-fone-unlock-android-screen/)Remove 4 Types of Android Screen Lock without Data Loss
- It can remove four-screen lock types - pattern, PIN, password & fingerprints.
- Only remove the lock screen. No data loss at all.
- No tech knowledge asked. Everybody can handle it.
- Work for Samsung Galaxy S/Note/Tab series, and LG G2, G3, G4, etc.
4,008,669 people have downloaded it
Tips: This tool also supports unlocking other Android screens beyond Samsung and LG. However, it does not support saving all the data after unlocking, like Samsung and LG.
Step 1: Initialize the Dr.Fone on the computer, and there will be many options in front of you. In that, select the “Screen Unlock”.
Step 2: Now, to bypass swipe lock Android, using the USB cable, connect the Android device to your computer, and it will prompt the Unlock Android Screen option.
Step 3: To enable the download mode on your Android device, shut down your phone>Simultaneously, press the volume down, Home button, and Power button >Press the Volume up button. Once your device is in download mode, the recovery kit will get downloaded.
Step 4: You will see the result right in front of you as Dr.Fone - Screen Unlock, recovery will bypass swipe lock Android without hampering your data. Foremost, you can now access your device without swipe up to unlock the screen.
Pretty simple, right? Dr.Fone - Screen Unlock to the rescue for the issue of swipe screen to unlock.
Part 3: How to turn off the swipe to unlock when the pattern is enabled?
In this section, we will cover how to turn off the swipe to unlock when the pattern lock of the Tecno Spark 20 device is enabled. Therefore, here we will go through the process of turning off the swipe to unlock the feature of your device. This structure is formed in some interval of locking the screen.
The steps below imply turning off of swiping screen instantly:
Step 1: At first, open the app “Setting” present on your Android device.
Step 2: There will be multiple interfaces. Now choose the option “Security.”
**Step 3:** To turn off the swipe screen, when the pattern is enabled then, choose “Screen lock” and then click on “NONE.”Step 4: If you have enabled your pattern choice already, it will again prompt you to enter the pattern. Once you entered the pattern, the swipe screen lock will disappear.
Step 5: The final step is to reboot your Android device to update the feature of turning off the swipe screen. Now you can open your device at any time without using the pattern lock feature.
Note: Regardless of any situation of forgetting the Android lock password, you can go for an email account set up for swiping into the Android devices.
## ConclusionNow, to sum up, we would say that in this article, we tried to bring out the best solutions for your Android device in such cases wherein you want to disable your screen security. The Dr.Fone - Screen Unlock is simply a proven mechanism that delivers what we need and that, too, without any data loss. We ensure that you can disable the swipe screen to unlock easily and effectively using the methods given above. Hence, you can access your phone by bypassing swipe lock Android even if you forget the screen lock code. So, don’t just wait, but bring out the solution for the swipe screen to unlock the Android device with Dr.Fone - Screen Unlock (Android) now.
- Title: 6 Proven Ways to Unlock Tecno Spark 20 Phone When You Forget the Password
- Author: Marry
- Created at : 2024-09-07 18:44:11
- Updated at : 2024-09-08 18:44:11
- Link: https://unlock-android.techidaily.com/6-proven-ways-to-unlock-tecno-spark-20-phone-when-you-forget-the-password-by-drfone-android/
- License: This work is licensed under CC BY-NC-SA 4.0.