Local passcode and autolock

[r10s]

and here, with reasoning why it is currently not implemented:

Protect acces to Deltachat by pincode/fingerprint

Hi everybody, It is not possible (sorry if i missed how) to lock the app after a certain amount of time, and to have to type a pincode to access it (or fingerprint) in order to further secure the access at the app. I find this feature very nice in telegram, and would love to see it deployed on deltachat. What do you feel about it ?