its been a few years since i've done any electronics but have been asked to research the viability of an idea and have gotten stuck...
We want to transmit a timing signal from RFID readers which will be picked up by tags and used to control a simple switching of an led. The led will be on a powered circuit, and will fade over a few seconds, but essentially will be turned on when the reader emits the pulse.
I suppose this could be done with a standard RF circuit, but on some of the readers the communication will have to be 2-way (recognising a tag is within range and acting accordingly)
The reading/writing of data to the tags is not necessary at all.
Is it possible to use an RFID tag which can be used as a switch for the LED control circuit?
Would there be a better tech to use for this?