Individuals with autism and other cognitive disabilities tend to wander or elope from their caregivers routinely. This is a very vexing problem for caregivers and sometimes results in physical and emotional danger to the wandering individuals. This grant supports the development of a wearable electronic navigation unit which reports the position of the individual continuously to the caregiver both in indoor and outdoor locations. The system can also be integrated with other community and national safety networks (such as Amber Alert), and can be valuable in quickly locating individuals in emergency situations. In Phase I, researchers evaluated a preliminary device in a focus group of parents, teachers, autism risk management professionals, and researchers to gather refined user requirements, usability recommendations, and additional features. In Phase II, a refined set of devices will be built and tested in larger user groups, and finally, in a wide scale pilot test program. A parallel effort is underway to build relationships with and educate patient advocacy groups and user groups about this system as part of the commercialization strategy.