I have to admit that I don't really go all-out to protect my credit card from would-be thieves. I keep it in my wallet which stays in my pocket. If it gets stolen, I'm not actually liable for the false charges, so I'm not going to lose sleep over it. For those that are paranoid, you might check out this new card.
The Keypad Credit Card is exactly as it sounds, it's a credit card with an embedded keypad. You enter your secret passcode which then gives you a temporary one-time use passcode to authorize a transaction.
I don't know about you, but I think this is a bit redundant. If someone knows your PIN on your card, you're screwed anyway, I don't see how this card is going to protect against that. It's like trying to believe you're really going to keep out a hacker that's sitting at your PC (hint: it's not gonna happen).
Keypad Credit Card - PIN, Chip, Passcode, Sign and Hurry…? [via redferret]