An RFID tag that has no internal power-source and can therefore be very small. Passive tags are powered by the energy from the RFID reader antenna. Tag range is limited to several metres.

An RFID tag without a battery. When radio waves from the reader reach the chip's antenna, it creates a magnetic field. The tag draws power from the field and is able to send back information stored on the chip. Today, simple passive tags cost around 50 cents to several dollars.

An RFID tag without a power source or transmitter. Radio waves from an RFID reader are collected from the RFID tag antenna, which powers up the microchip in the tag. The tag is then able to send back information stored in the chip to the reader.

1. An RFID tag without a battery. When radio waves from the reader reach the chip’s antenna, the energy is converted by the antenna into electricity that can power up the microchip in the tag. The tag is able to send back information stored on the chip. Today, simple passive tags cost from U.S. 20 cents to several dollars, depending on the amount of memory on the tag and other features. 2. A tag that contains no internal power source. It typically derives its power from the carrier signal radiated from the scanner or reader. This type of tag is used in all library RFID systems.

an RF tag that draws its electrical power from radio waves. It lasts longer and is less expensive than an active tag. Passive tags are typically used in open-loop applications.