We have all had the magnetic strips on our credit cards wear out, I'm sure I"m not the only one. the usual solution is to just call up the credit card company and have them send you a new one. Personally I think it is due to sitting on it all the time and wearing off the magnetic material, but lately I've heard some other theorys.
Today, I tried to use my card and it didn't work in the tellers machine. the teller said it was due to heightened security and the airport had the metal detectors turned on full blast and that was what erased it (yeah right). its funny it works fine at the gas pumps, but not at the grocery store.
A few weeks ago, when I was in ohio and the card didn't work the teller at subway put it in a plastic sack, jumbled it around, took it out and it magically worked again. weird.
then today, it didn't work so the teller at the GIANT EAGLE asked if I wanted to do the 'bag trick' on it. by the way, we have nick named the store 'big bird' and 'screaming eagle' but one of my Coworkers says thats the name of harley aftermarket parts company, but I digress.
So I grab a plastic sack, throw my card in it and shake it around a bit. the teller looks at me like I'm insane (hey, it was her that suggested it...) for her, the 'bag trick' is to put in the plasic bag and then swipe it through the reader IN THE BAG. amazingly it worked. this ohio place is kinda strange.