[nsxwolf]

I'm just not able to see the point. You're the user and the device is in your possession. If that's not the case, that's what a PIN or TouchID addresses.

A OS X desktop analogy would be having sensitive information in a Safari window, then hitting the Mission Control key, and expecting the zoomed out image to be replaced with something obfuscating the sensitive information, only to be restored when you click on the window. I don't see what's gained.

[ctdonath]

The point is sensitive data is stored unencrypted and displayed outside the app during normal usage. That is flatly intolerable to many users.