Of course they have broken it, I had no doubt it would be broken like any other fingerprint security system.

The issue here is that it's ok, it doesn't really matter. It is all about the amount of security you need. Does a normal user need unbreakable security? No. The security provided with this method is more than ok, it is kinda secure and it's faster (imho) than writing your passcode. After all your "enemies" here are nosy friends or similar...

If you need "unbreakable" security then you shouldn't use iphone or android, or you should use an specific secure storage application (cyphered content, hard to guess pass or whatever). If you need "unbreakable" security you better consider hiring a security consultant.

So, the question here is, are the security systems in mobile devices more than fine for most normal users? I guess so...