http://www.poeghostal.com/wp-content/uploads/2009/02/homer_2.jpg

a cover for a deep-sea cable tapping sub?

So when I install this on my assembly line workers as a "communication device", I will also get the benefit of knowing exactly what they are doing (or not doing) at any time as well? Bonus!

"The FPGA board was connected to a Maxim 1740 interface chip, which was linked via thin wires to a fake card, used for insertion in the terminal." so, we'll have to hand over our card for the cashier to swipe.