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01-27-2012, 03:19 PM
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#21 |
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Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
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The Washington DC subway system has these reusable fare cards that are really fragile. They crack when you keep them in your wallet and they stop working. I hollowed out this cassette and put the fare card inside to protect it. The wireless signal from the card easily broadcasts through the cassette case.
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