I need a lock that I can program to unlock after a set period of time like 2 hours. Where can I find something like that?
The lock app will depend on where you want to put it. If it's your phone then you can get an app that will be compatible to your phone. For example if it an iPhone you can get them from http://www.iphoneheat.com/2009/07/how-to-password-protect-applications-on-iphone/.
On a pc? Norton or norton 360