Originally Posted By: mlord
Done right, it's pretty secure, and no hacked reader can do anything bad with it.

I suppose one might hack a reader to display different charge amounts that what it internally passes to the chip, but that's what paper receipts are intended to combat.

And again, if the chip stuff is Done Right(tm), there should be nothing that a hacked reader could "steal" for future fraudulent re-use.

Cheers