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RFID tags
coil-antenna to track items at a distance. RFID tags have been placed in the packaging of products you might buy at a
local store. As time goes by, they will become less expensive and will be used extensively.
Each tiny chip is hooked up to an antenna coil that picks up electromagnetic energy beamed at it from a reader device.
When it picks up the energy, the chip sends back its unique identification number to the reader device, allowing the
item to be remotely identified. RFID chips can beam back information anywhere from a couple of inches to up to 20 or
30 feet away.
Some of the world's largest product manufacturers have been planning since 1999 to develop and commercialize this
technology to the point where it can replace the bar code.
coil-antenna to track items at a distance. RFID tags have been placed in the packaging of products you might buy at a
local store. As time goes by, they will become less expensive and will be used extensively.
Each tiny chip is hooked up to an antenna coil that picks up electromagnetic energy beamed at it from a reader device.
When it picks up the energy, the chip sends back its unique identification number to the reader device, allowing the
item to be remotely identified. RFID chips can beam back information anywhere from a couple of inches to up to 20 or
30 feet away.
Some of the world's largest product manufacturers have been planning since 1999 to develop and commercialize this
technology to the point where it can replace the bar code.