I'm an industrial designer with limited knowledge of electronics and was looking for some help. I am in the process of developing a dementia care product.
The idea is to manage the access residents have to each others rooms, currently they can wander in and out of rooms sometimes; sleeping in beds, trying on clothes and moving possessions around. This causes distress to residents confrontations between family and care home owners as well an extra work for carers and staff. It is not acceptable to lock the rooms as residents cannot use keys so it would be seen as an infringement of their rights.
I am considering using RFID UHF technology to trigger an electromagnetic door lock when a resident approaches their own door. Based on race timing systems, I am considering placing an antenna under the carpet in front of the door which reads a unique passive tag placed under the insole of all their shoes and slippers.
There are the following considerations:
- Each tag must be very cheap ($0.50) and almost disposable, so no batteries.
- Residents may not always wear their own clothes but tend to always wear their own footwear around the home.
- This is not a security device and only intended to improve the current situation.
- Dementia sufferers will not be able to wear bracelets or lanyards.
- They will not be able to swipe a card.
Although RFID UHF technology appears to be the best solution, before I 'plough on' does anyone have ideas for a more appropriate technology?