MyRingGuard is a personal security location-based device. Worn on the user's finger, MyRingGuard is a ring that has a button easily pressed by the wearer's thumb. Press the button and the ring communicates with the user's smartphone, up to four meters away, to send an urgent distress message that includes GPS location. Once the first message is sent out, updated text messages are sent at regular intervals with the latest location information until the application is turned off or the phone's battery is exhausted. Get it from www.MyRingGuard.com for $50.
