Kitestring is a new SMS based "safe call" service developed by Stephan Boyer. The idea behind Kitestring is simple but brilliant; before venturing out you can instruct the service to send a text message to your chosen emergency contact if you don't check in after a certain amount of time. The concept is so simple and incredibly useful that it is surprising with the wide variety of personal safety apps available for smart-phones, none hit the mark as neatly as the SMS based Kitesting.
