Better yet, Einstein can save trusted requests for you! Then you need only respond to notifications when something out-of-the-ordinary happens. You can also get a verification code when you need one. The codes also work as a backup authentication method if you're on a plane, or have poor connectivity. This means Salesforce Authenticator also works with third-party services that use OATH TOTP tokens. http://twofactorauth.org. Continued use of GPS running in the background can dramatically decrease battery life. Rest assured, we go to great lengths to ensure minimal GPS use so that Salesforce Authenticator does not significantly impact your battery life.