Use touch ID without locking your phone I like to use touch fingerprint ID when in lieu of a password (when buying apps etc...), but I don't want to have to use it to unlock my phone, nor do I want a passcode lock. Is there a way to enable touch ID without locking the phone?
This is not exactly what the OP asked for, but it might partially solve the problem:
- Enrol a fingerprint and select a passcode,
- disable "iPhone Unlock",
- change "Require Passcode" to the maximum ("After 4 hours" in my case).

This will allow you to use Touch ID in Applications, but will require passcode for unlock only once in a long time.