Mine didn't work at the phone store and I had to fork over cash (grrr--now I don't have much cash). But I think that was just them--I had no trouble at Boots, and after messing about, they made it work like credit at Primark. We still don't have chip and pin in the US.
This morning, Google told me "We blocked a suspicious attempt to log in!! Was it you!?" Yes, it was me--no, I'm not in my normal geographical location now.