PhoneLock locks the user's BB from everything but the red button. It's not foolproof, but it is faster and better looking then the default lock. Set this app to one of your side keys, then just click the sidekey to activate it. It's easy when the PhoneLock is running simply place your thumb in the box labeled thumbrint (don't click the screen just hold your thumb on it). This will scan your thumb (no it doesn't really scan your actually thumbprint) and grant you access to the phone. Placing your finger anywhere else on the screen will deny you access.