Originally Posted by
PhotoJim
When you use it at the Canada/US border, at properly equipped lanes at certain crossings there is an RFID reader that will read the card. The border agent will have your information on his screen when you pull up to him.
One can read about the RFID-equipped lanes in more detail here:
http://www.getyouhome.gov/html/rfid/rfid_how_to.html