[whoopdedo]

Some skimmers have a camera to capture an image of the card's CVV as well as another copy of the name/number/date.

[Terr_]

Here I was thinking that my near-illegibly worn-away CVV was a reason to get a replacement card... but instead it's a surprise security bonus! :p

Actually, I spoke too soon... the signature-strip has been worn away too and now that I really look at it, I can make out the word "Void" underneath.

[zirgs]

Good thing that the back of my phone has neither of those.

Seems like a good idea to wrap the card in something opaque.