Antenna and Reader

Im currently doing a project using a antenna and a reader. Is there anyway where by I can send a signal to activate a circuit which then will turn on the camera whenever 2 tags is being read by the reader at the same time. Its kind of like a survillance project. Is there any ideas which I can go about doing it? Thank you for all the help needed.

:)
Weisi

You'll need to use the PCs serial port, connected to a Serial relay board.
The Microsoft Comm Active-X control will allow you to send characters to the relay board and switch relays on and off.

Thanks for the reply! Any idea or example on how the Microsoft Comm Active-X control works?

:)
Weisi