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BlogsAsk The Experts ForumWhat Is the Average Battery Life of an RFID Card Used for Building Access?
What Is the Average Battery Life of an RFID Card Used for Building Access?
For example, in cards used by occupants of a condominium…?
There is no battery in the cards used to enter a building. The reader emits radio waves, which the transponder in the card captures and uses to reflect back a signal. This is what is known as a passive RFID tag or transponder.
—Mark Roberti, Founder and Editor, RFID Journal
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