This project could be hardware and software, or simply a smart phone or smart watch app.
I came up with this idea after experiencing issues with my grandmother. Often she is perfectly capable of living on her own. But in the early stages of dementia and Alzheimer's confusion can strike without warning. This often leads to dangerous situations where a person may wander off confused.
Something like this could mean several years of living a more normal life that includes independence, outdoor activity and piece of mind for friends and family.