| http://www.w3.org/ns/prov#value | - Because the first and second portions 16, 18 of the antenna are in opposite phases, their fields tend to cancel each other at a distance, for example at 0.5 m or greater distance measured from the passport reader 10, while the antenna 16 is able to communicate with the RFID element 12 at near distances from the passport reader, such as 3 cm or less.
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