RFID button?

[dpopiz]

I just got an idea and I'm surprised I can't find anything on google about it:

Why not take a regular passive RFID and then put a button between the antenna and the microcontroller? You could then use these as a general-purpose ultra-cheap ($0.50 a pop) battery-free button for controller various stuff. Just have an RFID reader in the vicinity constantly calling each RFID and seeing if it responds with its serial no. If it does, that means the button is currently being pressed.

 

[ttown]

You mean like a wireless, battery-free keyboard?

Seems like it would have potential.
Patent it! Quick!

 

[So]

What's the point of this?

 

[So]

Originally posted by: ttown
You mean like a wireless, battery-free keyboard?

Seems like it would have potential.
Patent it! Quick!

:shocked:

 

[dpopiz]

Originally posted by: So
What's the point of this?

to control stuff for $0.50 or less a button without having messy wires everywhere or replacing batteries

plus, it's a wildly popular industry standard technology that has tons of production behind it -- one of the reasons RFID tags are so friggen cheap

 

[Rhin0]

I just sent in the paperwork for a patent on this.

--> PROFIT.