Samsung How to Add Fingerprint

most Samsung devices (with the exception of the cheapest entry-level devices) have a fingerprint sensor built in that can be used to unlock the device. setting up the display lock with fingerprint always requires a secondary lock such as a PIN, password or pattern. even if these are hardly ever or never used, they should be well remembered. if the fingerprint cannot be scanned or the security settings need to be changed, the PIN/password/pattern is required. any finger can be used to set up the fingerprint.