Is there any evidence or lab conclusion about the interference of RFID readers with phone service in the 900 MHz frequency range?
Regulators carefully apportion the radio frequency spectrum to avoid having one RF device interfere with another. So radio frequency identification generally is given a piece of the spectrum that will not interfere with cell phones. I have not heard of any examples of RFID interfering with cellular service.
I hope this answers your question, and I look forward to seeing you at RFID Journal LIVE! in May.
—Mark Roberti, Founder and Editor, RFID Journal