LockDown Pro Protect your applications with a password!
This tutorial will explain how to install and use the application Cydia LockDown Pro.
Clearly if you want to restrict access to certain applications to certain people, then LockDownPro is for you!
Available on the source of BigBoss for $ 1.99 (This tweak can save you more!)
Setting
Enjoy the results
Tested on iPhone 3Gs IOS 4.0.1 and 4.1