Turning your cell phone into a CharlieCard

Step-by-step directions - acetone is involved.

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I love this`

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Nine out of 10 hacks are really lame, but this one is outstanding. If you have the ability to do something better with RFID than the standard card- or wand-based technology currently available, by all means use it. Frankly, I'd love to cut out the middleman and sew the chip into my back pocket.

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That's pantsist

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Maybe the person was using "back pocket" euphemistically. ;-)

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