If Apple decides to include a fingerprint sensor, it will surely not be gimmicky. Every sensor in the iPhone today (eg. magnetometer) has a real purpose for imp

If Apple decides to include a fingerprint sensor, it will surely not be gimmicky. Every sensor in the iPhone today (eg. magnetometer) has a real purpose for improving user experience (directional geolocation), but the implementation (apps) can be somewhat gimmicky (compass app). I believe it will be totally invisible to the user, improve security (more secure than PIN) while improving user experience (no need to enter pass lock PIN, itunes password, etc). I've read speculation that the sensor itself would be placed under the home button, but I think it makes more sense to have it placed directly beneath (or inside) the screen. (Does it make more sense to push the home button to authenticate, or to just slide your finger to unlock?) Apple has the possibility to add an passbook-style app which can store your passwords and be a front end authenticator for other apps/websites (kinda like OS X Keychain). A 1Password for the regular guy.