Allow Touch ID with a timeout

[jdelic]

Hi,

I would like to propose the following feature:

As a security conscious user who also values convenience I would like to be able to:

• for N minutes after unlocking the app with my passcode
• unlock the app again using touch ID

This way I would achieve the following goals:

• Enpass would never be left fully unlocked (i.e. changing into the app via multitasking, activity or tapping the icon should never lead into an unlocked app)
• Enpass would still regularly require the full passphrase
• Touch ID would be used as a convenient temporary unlock

Thereby, in my opinion, providing a good  trade-off between convenience and security. Let's not forget: A fingerprint is a username, not a password.