I would like to do this in order to operate an RFID push-button door lock. Would it be possible?
You would not be able to replace a passive RFID tag with an active RFID tag unless you were to replace the reader within the door lock. Active tags would likely operate at a different frequency and would certainly use a different air-interface protocol to communicate. The air-interface protocol governs how tags and readers communicate—it's the language that the system components use to talk. It would be like trying to please an English-speaking audience by replacing their favorite radio station on their AM radios with an FM station that broadcasts in Chinese.
—Mark Roberti, Founder and Editor, RFID Journal
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