Pizza delivery apps often come in handy. Sometimes they save your life.

NBCnews.com has a video report on a  Florida mother who used the Pizza Hut technology while being held hostage at knife point by her boyfriend to call for help. Cheryl Treadway convinced her boyfriend to let her use her phone to order from Pizza Hut, police told NBC station WFLA on Tuesday. But as well as requesting a small hand-tossed classic pizza with pepperoni, Treadway also wrote "911 hostage help" in the order's comments — prompting the Pizza Hut to call the authorities.

Read more about this quick-thinking mom who got the most out of the latest pizza delivery app.