Samsung Galaxy Chromebook Go
It's not possible use the fingerprint sensor on my laptop
Solution 1 of 2: There is dust or dirt on the fingerprint sensor
If there's dust or dirt on the fingerprint sensor, it may prevent it from registering fingerprints.
Clean the fingerprint sensor using a wet wipe or a damp cloth and finish using a dry cloth. Remember to turn off your laptop and remove the charger from the charging port before you start cleaning the touchpad.