Since I'm not really confident coin/plastc wont be vaporware before EMV is mandatory, I got one of these instead, since you can buy and actually get it now: http://www.looppay.com/products/

They do this crazy thing where they inductively couple with the magnetic head, so that you just hold it near the reader and press a button instead of doing a swipe. I bought the fob one initially, but it's weird in that you have to have it attached to the headphone jack, which is more of a song and dance than I'd like. The bluetooth one fixes a lot of that problem, though you still can't select a card from it directly.

I've also found that it's often more trouble than it's worth when eating out (no display for last four digits, it's unfamiliar, no card network name) or paying for gas (they have a dumb workaround with trying to use some card without a stripe, but it's super hard to get to work).

That said, it works as advertised on most point of sale machines and vending machines when you're right in front of the magnetic reader or can coach someone with it. It also works with weird cards like my Target and JCB card, and you can put in gift cards with your name on them in it as well.