My college uses credit-card-shaped ID cards. They swipe the card when you buy meals. Recently, they haven't been able to successfully swipe the card. I think it's because of the gunk stuck to its black strip. This gunk won't come off with simple rinsing.
How do I clean off the gunk? Can I scrub it with a toothbrush? Scratch it off with my nails? Soak it in detergent? I don't want to ruin the strip.|||Are you sure it's your card and not the reader? Ask them to clean the reader. You might want to try using the card in another reader to see if it works or not.
If there is thick gunk on there then try soaking it in warm water for a while before scrubbing it with a sponge. I wouldn't use anything too abrasive.
Your card might also have become demagnetized. If that's the case then you'll have to ask for a new one.|||It really isn't cleanable. You can call the company and they will replace it.
We have done this due to the strip getting damaged from the wallet is it kept in.
They replace it with pleasure !!
: )
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