(Background: For my USian visitors, all our credit/debit cards have a smart chip, and you have to put in a PIN rather than signing anything; it's quite secure, and giving your number over the phone is the most significant fraud vector for card payments.)
So I made a first order from The Good Earth Express tonight (trying to diversify our Asian food delivery options, and we've been a fan of the restaurant in Knightsbridge for years), and usually when I want to pay for food delivery with a card, I give the number over the phone. Restaurants are noisy places, and this usually doesn't work that well (combine non-British accent, lots of similar numbers, noisy environment). But they have an interesting policy: their delivery people have cellular PDUs to take your card with chip-and-pin right there at your home.
What a great idea! I'm actually surprised that nobody else has ever done this for me. Simplifies things dramatically, and makes me far happier that I'm not giving all details necessary to fraudulently clone my card by shouting over a phone. Great service.
Oh, and the food's great. Not as good as the restaurant, but it's delivery after all. Definitely one to add to the rotation.