Toggr

Toggr is the world's first child-centric connected family platform. Toggr wearable allows children to effortlessly connect with their friends, listen to music, exchange ToggrTalk (voice) messages with their friends and family and do a lot more! Toggr parents can call or exchange voice messages with their children, know where the child is at all times, draw from a safe community of fellow parents when the child needs help, thus providing them complete peace of mind.

This application requires frequent sampling of parent location. It is only used to identify nearby parents that the Toggr parent can reach out to, if his/her child is in danger.Continued use of GPS running in the background can dramatically decrease battery life.
Note: if you don't share the location you will not able to use Toggr community advantage in case of your child's emergency. This is a self help group and only works if everyone cooperates.