Originally Posted by Corelli

Again, be very careful buying gift cards at supermarkets in the SoCal area. The gift cards and packaging look perfect. The thief is using a razor blade to slice through the packaging (so that it's not noticeable) copying the card info, putting everything back together, and then putting them back on the shelves waiting for people to activate them.

The clear give away (once you rip open the packaging and remove the card) is that there will be a dirty kind of glue that doesn't go away. This is what the thief is using to keep everything in place.