Samsung Galaxy S7 User Manual page 191

Fingerprints
Use fingerprint recognition as an alternative to entering passwords in
certain apps.
You can also use your fingerprint to verify your identity when logging
in to your Samsung account.
Note: Fingerprint recognition uses the unique characteristics of each
fingerprint to enhance the security of your device. The likelihood of
the fingerprint sensor confusing even small areas of two different
fingerprints is very low. But in rare cases, the sensor may recognize
a fingerprint that is similar to a registered fingerprint.
Register a Fingerprint
You can register up to three fingerprints. A password is also set up
as an alternative to your fingerprint.
1. From a Home screen, tap
2. Tap Lock screen and security > Fingerprints.
•
To add a fingerprint, tap
prompts to register a fingerprint and password. You must set a
pattern, PIN, or password to protect your fingerprints.
•
To rename a fingerprint, tap the fingerprint, enter a new name,
and then tap Rename.
•
To delete a fingerprint, touch and hold the fingerprint, and
then tap Remove. Confirm when prompted.
Settings
Apps >
Settings.
Add fingerprint and follow the
180 Lock Screen and Security