PIN code lock on iOS app

[3rdparty]

Would be great to have an additional layer of security on the iOS app, where it prompts you for a 4 digit pin code any time you launch or switch to the app.  It's not always practical to be able to log out of the app when you are done using it, and then it can be easy to forget that you are logged in, or your credentials are saved.

Both the 1Password and MINT iOS apps do this really well.  Having the additional layer of security is essential for the iOS app, especially in the unfortunate event that a phone was lost and you don't want anyone to have access to your TeamViewer partner list, but want to be able to save your credentials within the app.