Mobile phones give us a tremendous sense of security: we’ve got access to the internet and our entire contact list if we need it. But what about when something unplanned happens? Like being attacked in a parking garage or a biking accident? In situations like these, phones have a tendency to go flying or frustrate us with lock screens. Safelet is a piece of GPS-equipped, wearable technology that’s designed to summon help when you need it most–with just a single touch to your wrist. Follow the link below to learn how it works.