I found something that might be of use to you depending on what you need it for. It does not look like it could be the greatest quality, but at under $30 it does come at a price worth risking i guess. It is not wireless, but you might be able to work around that with a bit of ingenuity.
It's the closest thing I have come across to what you described, and even though it might be a sub-quality product, I was actually curious enough about it's ability that I put in an order for one. Simply to see what kind of value can be had for the ridiculously disposable cost.
http://www.buyincoins.com/item/54494.html