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My work uses ioProx proximity ID badges to get into the building, whose specs can be found here. We use the P10SHL.

My card is continually getting fried. I have gone through about 8 cards in a three year period, and my last card only lasted two weeks. The culprits are probably my cell phone and wireless car keys.

I'll be getting a new cell phone this summer, but in the meantime, is there anything I can do to shield the card to prevent it from getting fried?

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    \$\begingroup\$ The culprits are probably my cell phone and wireless car keys. - Based on what, exactly? It's extremely unlikely that these are to blame; they're not only much lower power than the card readers but also operating at a completely different frequency. I'm inclined to believe that this is a mechanical problem, which would be off-topic. \$\endgroup\$ May 4, 2012 at 15:12
  • \$\begingroup\$ Hi Kevin. Just based on they're wireless devices in close proximity to my card all day. When you say mechanical, do you mean cracks and large bends in the card? \$\endgroup\$ May 4, 2012 at 15:34
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    \$\begingroup\$ Not necessarily in the card plastic, rather problems in the hair-thin copper wires inside the card. A temporary bend could do it, vibration could do it, water ingress could do it, a sharp shock could do it...you don't have to see damage on the outside. \$\endgroup\$ May 4, 2012 at 16:13
  • \$\begingroup\$ Cellphone maybe - depends on card technology. Car key sender - extremely unlikely. Are other people experiencing failures? \$\endgroup\$
    – Russell McMahon
    May 4, 2012 at 17:29
  • \$\begingroup\$ Hi Russell. An unscientific polling of the people in group tells me that I am having way more failures than the rest of them. I will probably take Kevin's advice and get a sturdy sleeve so that the card doesn't bend. And if that doesn't work I can blame it on the cell phone and get a new phone. \$\endgroup\$ May 4, 2012 at 20:04

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