Electronic tether to tether my father's rollator to him Answered
My father lives independently but has poor mobility and dementia. He frequently walks away from his rollator and then gets trapped when he realises he has left it elsewhere in his home. A physical tether would be impractical and might actually increase his risk of falling. I think he would benefit from an electronic tether that would sound an alarm whenever he moved more than, say, three feet from the rollator.
There does not appear to be a commercially-available product to meet such a need.
Giving him a passive RFID tag to wear and attaching a light-weight alarm to the rollator that polls the tag every few seconds might generate a workable solution, but I don't have sufficient experience with RFID to generate a solution in a reasonable time-scale. I would probably favour CMOS timers and logic over a microcontroller for similar reasons.
Does anyone have a project that could be adapted, or expertise that could be applied, to this task?