This is the one that looks useful to me

GPS SmartSole is a ‘wearable’ yet ‘invisible’, stigma-free monitoring and wandering recovery solution - it’s a smartphone hidden in an insole.

The GPS enabled “Smart” insoles are offered in 3 trim-to-fit sizes, fitting easily into most adult shoes and lets you monitor the whereabouts of loved ones who may have a tendency to wander or at risk of becoming disoriented and lost.

No need for them to remember to carry a separate tracking device, just slip on their shoes and go – like they normally would. This system capitalizes on procedural memory, which means even those with advanced memory disorders typically remember to wear shoes!

The ergonomic GPS SmartSoles feel like regular insoles which means loved ones can be tracked unobtrusively and remain free from the stigma of other wearable trackers that can be seen by others. Avoid the struggle and anxiety caused by “lock on” bracelet trackers, which can be a stressor for those with Autism & Dementia.

This is wearable technology that not only provides peace of mind, but can also save lives, while preserving the privacy and dignity of the wearer.