I asked in the chatroom what Druff thinks about these things, but he ignored it. I guess he either didn't have anything to say, or didn't know about it.
Personally, I think it is somewhat important that people be aware of these things. If you never play in larger home games, then maybe this wouldn't be an issue. If you do though, you should be aware of this technology. By not covering it, Druff, you are basically doing the same thing as the complaints against people like Nolan Dalla not telling his Peter story.
I've had gamerunners call me to try to recruit players they despised, just so the mark would be setup and cheated with this device. It made for some crazy play at games. A guy would be a total nit, then play J3o and scoop a pot. Apparently a few wiser older guys quit these games, but a lot just stayed around and got stuck. It requires a marked deck to be entered into the game, but thats about it.
The thing reads barcodes off the edge of cards and feeds it into an ear piece. It looks like a cell phone. The guy who used it, would use like those big dr dre headphones to cover up the tiny ear piece. He would also buyin for very large amounts to put his cellphone on the middle of the table on top of his mound of chips. He also insisted on sitting in seat 5.