Quote Originally Posted by Melanie View Post
This assumes that the patient is going to put on shoes or slippers before they sleep-walk. They don't... they go wandering in bare feet...

The best method is for the patient to wear a wrist ID (of the kind they already fit in hospitals) with a proximity alarm tag (similar to the sort they have in stores to prevent you from stealing merchandise). The alarm is sounded as soon as they go through the main door out of their room or hospital ward. This also allows for the patient to get up normally and go to the bathroom without sounding an alarm (nobody sleepwalking as yet has flushed themselves down a toilet!).
Too true. An RFID wrist tag is common place in many nursing homes and hospitals to aid with wandering residents, sadly some with Alzheimer's. In my last job I was employed as a field / bench technician to install and service a wireless nurse call system operating on 27 and 304MHz. Top system. I worked with RFID-based wrist tags, door alarms, pressure sensors, displays, repeaters, dialers. Depressing job.