Serverless Authentication

Can you point me in the direction of a simple, serverless, authentication front end for a Phone Gap app?

Thank you,

I think you need to tell us more.

APP authentication for iOS and Android Phone Gap, that does not require an internet connection.

Tell us more - what do you mean by APP authentication?

A potential user of the app is not able to use it unless a fingerprint, password, code, or something else is provided and verified by the app or the device. This will require obtaining, managing, and resetting functionality to be present. Basically, like an iOS app that requires a password, to run, and also may allow a fingerprint to be used. Again, all without the internet.

Start here:

And here:

Thank you!!