Don't Do This To Your BART EZ Rider Card

BART, Bay Area Rapid Transit, recently issued RFID-based fare cards called BART EZ Rider. If you look closely, you can see where the actual chip is embedded within the card. Like other similar cards, I assumed there was a wire antenna also embedded in a rough spiral around the chip.

The card didn't fit nicely on the outside of my Jimi wallet so I decided to cut a notch to make it fit better. While I didn't see any evidence of cutting the antenna, the card quit working. So, if you plan to chop your card, at least try the opposite side as mine!

Since the Jimi only fits four cards inside, and I carry five, next up, cutting apart my Discover card...

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I think that it is a sort of fraud protection, thus happened to me once with a different card of mine.
LinuxH4x0r8 years ago
try melting the plastic around where you cut and reconnecting the wires
ewilhelm (author)  LinuxH4x0r8 years ago
No evidence of wires being cut.
very odd. maybe its like a metallic ink layer and not foil ? stand it with the cut edge in a cup of very salty water and see if it works
Odd. Most of them have foil traces....
Kiteman8 years ago
Since that one is dead, is there any sort of autopsy you could perform on it to find out what exactly went wrong, so that others don't kill theirs?
They dissolve nicely in acetone i think.
gmjhowe8 years ago
I understand your trying to modify the card. BUT, you should be modded, or creating a new wallet.