Has anyone used Comfort Zone tracking system that is recommended by Alzheimer's organization?

Hi, In case you haven't solved it yet. we purchased a garmin GTU10 that my dad wears on his belt that can be set to check in at specific times or coming and going from places and his location can be queried at any time. \It sends messages to my phone and email including a low battery message. We have been using it for about a month and it is working very well.

A cellphone will do the job just fine if you can get him to carry one. Verizon has an app for tracking, and I'll bet other companies do too.