Moderators note:
This thread was split from the following thread:
RF Project


IS THERe a way that i can detect an material from being stolen(e.g: the object has RFID tag on it)

imagine that i will notified that certain object is not from range anymore...... something like that.....or any sensors that can be attached to the gate that can simply be activated when object(w/ RFID) pass through it??

 

optiris123, why didn't you start your own thread instead of piggybacking on this one?? Your question has absolutely nothing to do with the discussion going on here.

 

or any sensors that can be attached to the gate that can simply be activated when object(w/ RFID) pass through it??

This is what happens when you try to shoplift and the alarms go off - the rfid tag in the product is registered by the sensors in the doorway, meaning the tag hadn't been deactivated by the cashier when you paid for it.

 

the rfid tags on clothing and such is a passive resonant cavity, the tag passing between the uprights of the detector gate upset the field of an oscilator, somewhere around 400 mhz. there is no practical way to extend the range of these tags.
cliff