How to Set Up Fingerprint Unlock
Register your fingerprint on your phone so you can unlock it and approve purchases with a quick tap.
Steps
- 1
Open the Settings app
on your phone. On iPhone go to "Touch ID & Passcode." On Android go to "Security" then "Fingerprint."
- 2
Enter your passcode
to confirm your identity. You need your existing passcode before adding a fingerprint.
- 3
Tap "Add a Fingerprint"
and follow the on screen prompts. Place your finger on the sensor as directed.
- 4
Lift and rest your finger
repeatedly as the phone captures different parts of your fingerprint. Move your finger slightly each time.
- 5
Tap "Continue"
when the phone says the fingerprint is complete. You can now unlock your phone by touching the sensor.
Frequently Asked Questions
Can someone unlock my phone with my fingerprint while I am asleep?Show
Yes, that is possible. Use a strong passcode instead if you are concerned about security while asleep.
How many fingerprints can I add?Show
Most phones let you add up to five fingerprints. You can name each one to remember which finger it is.
Does fingerprint unlock work with wet hands?Show
Fingerprint sensors often fail with wet or sweaty fingers. Dry your hands or use your passcode instead.
What if my fingerprint stops working?Show
Go to settings and delete your old fingerprints. Then add them again fresh. This often fixes recognition issues.
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Written by the HowToDoStuff.online editorial team. Last updated .