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RFID-enabled Device Sounds an Alarm When Someone Tries to Leave Home
The PureRFid Companion system, sold to consumers, is designed to trigger alerts when a person with dementia nears a doorway.
Apr 07, 2010—PureRFid, a new startup created by RFID solutions provider Vuance, has launched a product for in-home use in the United States, to help families track relatives at risk for wandering away. The anti-wandering system, which acts as an audible alarm, can be installed in a home and sound an alert if someone wearing an RFID-enabled wristband nears a doorway.
The Companion anti-wandering system, which consists of a wristband and a door alarm containing an RFID interrogator, became commercially available on Apr. 2. The system can be purchased directly from PureRFid, or through resellers of health-care products. Prior to launching the Companion, the company had been testing prototypes of the system in such locations as the Vuance office, as well as at an Israeli research and development facility, says Kevin Michael, Vuance's VP of operations.
The gray plastic wristband contains a 433 MHz active RFID tag (1.4 inches in width and 0.4 inch in thickness) that contains a motion detector and a battery with a life span of approximately three years. The tag uses a proprietary air-interface protocol to beacon its unique ID number every five seconds when stationary, and every three seconds while in motion. The alarm device, powered by a 12-volt adapter that plugs into a wall outlet, can be attached above a door with two-sided adhesive tape, and is designed to read a tag up to 4 feet away.
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