Can parents do anything to stop teens from texting while driving? Education is the best method. Not only that, but there are several apps for smartphones that help. Phoneguard is a free app that can be downloaded to the phone. It detects when the car is moving. This app locks the phone out from not only texting but surfing the web and reading emails. It does have an override if you are a passenger. AT&T’s app is called DriveMode and it is free too. Check with you provider and be safe.