Visit a website or an app to log in. Your login and password will be saved when you click "Save" for Samsung Pass' Autofill feature. A fingerprint scan is now required to access the app or website. Getting rid of the cache files can solve a variety of problems, including the Samsung pass fingerprint error. The cache files for the Samsung Pass app can be cleared by: Going to Settings > Apps from your Samsung phone's Main Screen and scrolling back toward the Samsung Pass app.