Compatible with iOS 4 and 5
TUI Checkpoint is an application that prevents drunk texting.
Before you go out you lock the messages using the TUI Checkpoint app and configure the settings accordingly. For instance you would want to set the emergency contact as the Designated Driver. When Messages is locked you can only text the emergency contact. You can also read the last 20 messages from the last 7 phone numbers.
To unlock messages you have to run TUI Checkpoint and unlock it. To successfully unlock the Messages app, you need to pass three drunk tests which tests your reflex and your psyc state. If you fail any of the three tests 3 times, you can have the test again after an hour.
The new app is added to your home screen.
See further below for Screenshots