Over the last few days I built Kitestring, a mobile-friendly web application that checks up on you when you go on unsafe trips.

You tell the application that you’re going on a trip, and then it checks up on you (via SMS) to make sure you haven’t been mugged or assaulted. You reply to the SMS messages (or check in on the website) to confirm your well-being. If you fall off the radar, the application alerts a list of emergency contacts that you set up ahead of time.