Radio/magnetic (or whatever will work) sensor
spydee
Posts: 1
Does anyone know if you can buy a sensor which, if presented with 'token A' will flash red, and if presented with 'token B' will flash green.
The sensor would have to be operated ideally by a small battery or two (coin cell lithium batteries CR2025 3v). I'd hope that I wouldn't have to power the tokens, only the sensor.
As an example, say I had the sensor on a table and the token on a wrist band, i'd hope that when the person wearing the wrist band presented it (and therefore the token) to the sensor, the sensor would flash green if it was token A or red if token B.
Really hope someone has come across something like this as I haven't got a clue what to search for on the internet. A search for 'Sensors' hasn't given me anything yet. :frown:
The sensor would have to be operated ideally by a small battery or two (coin cell lithium batteries CR2025 3v). I'd hope that I wouldn't have to power the tokens, only the sensor.
As an example, say I had the sensor on a table and the token on a wrist band, i'd hope that when the person wearing the wrist band presented it (and therefore the token) to the sensor, the sensor would flash green if it was token A or red if token B.
Really hope someone has come across something like this as I haven't got a clue what to search for on the internet. A search for 'Sensors' hasn't given me anything yet. :frown:
Comments
Welcome to the forum!
Check out Parallax's selction of RFID products:
The 25mm tags could be incorporated into a wristband, with the red/green selection based upon whether the serial number is even or odd.
Also Google rfid wristband. You will find a wide variety of passive RFID tags already incorporated into wristbands. Not all of them will be compatible with the Parallax readers, though.
-Phil