There's a 700+ page thread discussing it:

http://www.flyertalk.com/forum/credi...signature.html

In short, there's only one issuer offering "true" chip and PIN (and not simply cards that have a backup PIN for kiosks) that people can apply for right now. If you're fortunate to have Diner's Club, your card is chip and PIN as well. A few others briefly had it but switched to chip and signature.

Also, I was thinking some more about how common pay at the table via mobile app could end up being. Even though apps like OpenTable could add support for Apple Pay and Google Wallet, one app is likely not going to become dominant. I'm not sure people would be willing to have three or four different restaurant pay apps installed on their phones just to avoid having their cards taken away from them.