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The size and shape of the RFID tags vary depending on their application. IBM has developed some tags (such as the white one, third from the left) to be worn around the wrists of hospital patients. Other tag (such as the black one that is fourth from the left, have been designed specifically to be embedded in car tyres
IBM has trialed RFID Portal technology in the Dublin centre to track the movement of devices such as laptops in and out of the office. Devices carrying an RFID tag are tracked as they pass through the portal and an alarm sounds if the action has not been authorised.
According to IBM, similar portals are used in Hong Kong Airport to track luggage.
For smaller companies that cannot afford to invest in a full RFID implementation, IBM has developed the Express RFID Slap and Ship system. This cuts the cost of tagging devices.