Would you ever use something like this? DrnkPay STOPS you from making under-the-influence purchases. For DrnkPay to work, users have to link their credit/debit cards to the app. They can then set a limit of drinks they wish to have (like 3 pints of beer), and the app will only block the cards if they go over it. Also, the app allows you only block the cards for certain things, like online shopping, bars, food, etc., and also comes with a “Help me out” feature, which calls you an emergency Uber to take you home. Pretty cool!