RFID Reader and RFID Tag communication.

Hi guys,


I am working with RFID devices first time. I don't know how it's detection mechanism works. Can you guys help me and tell me how it works?

I am looking for RFID solution that works as follows:

range = 1m - 5m
detection: When i put tag in the range it detects that tag, and keeps sending the information until tag is there. And stops sending information as soon as I move the tag out from it's range.

The detection mechanism is very very important to me. Because my solution is as follows:
when tag will be in range the system will start operating, and it keeps continue to operate until tag is there. As soon as I move the tag out of it's range system is supposed to stop work.

Thanks,


Habib Ahmed

 

Also I need to know which category of RFID tags can pass through the metal or plastic materials without having detection problem.

Dear Engineers please help me out....

Thanks,

Habib Ahmed