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.
2007-01-25
10:29:47
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2 answers
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asked by
Anonymous
in
Business & Finance
➔ Other - Business & Finance