I found this interesting article about various apps that will prevent a phone from texting while driving. The app works with the phone’s GPS to see how fast the phone is moving. If it is moving faster than a person can walk the phone is blocked from texting. I haven’t tried it. In theory it would prevent someone from texting while driving a car or while on a bike or bicycle. If you are a passenger in a car you can answer a timed question to unlock the app. Maybe a good idea for parents with teenage kids.