The positioning of the device you need swipe looks a little inconvenient. You'd need to look down and stoop a little to touch your card to it (assuming the picture in the article is representative of normal positioning).<p>In the London Underground, the Oyster Card readers are placed on top of the dividers between the turnstiles, so you just move through as normal and swipe as you go.<p>I also wonder whether combining a credit card and subway payment card is necessarily the best idea. If you want an Oyster Card in London, you can usually grab a pre-paid one in the terminal itself, or in a newsagent by the entrance. If you lose your card, then you've only lost what you put on it.<p>Getting a contactless card seems more work, and I'd be a little more nervous about it being taken whilst I was waving it around.