What should happen is that the app allows me to select an image (or video segment, say) locally or in a Cloud (on flickr, say), and would then store my account information in there using steganographic techniques. The actual image would not be remembered by the app and would thus be obscure to any brute force attacker. This should work well, because its quite natural for many images, etc., to be stored and accessed on mobile devices. The app should still encrypt the key ring, and it should be careful about not creating a suspicious signal when placing encrypted content in the carrier medium.
Call it a steganographic key ring (or key chain; similar to a steganographic file system) then. My question is: Does such an app (already) exist?