Needed: A Debit Card Hood

I hate the openness of the debit card swipers at the store. It seems like it wouldn't take a very creative swindle artist to figure out what your number is just by standing there and observing you. Or observing you from an angle.

They need some kind of hood you can put over yourself and the machine. Or a booth that you step in or that descends from the ceiling to encase you, so you can type your number in private. I think they could get creative. Some kind of heat shield that wiggles up the air right next to you, like you see near campfires, so that no one can get a clear shot of what's going on on the touchpad.

But my paranoia is such that I already know they could just have a thing hooked up to it to yield the numbers all day and then they'd pick it up at night. Or have it beaming the numbers from there to the parking lot.

I like using debit cards instead of checks for many obvious reasons. But I wish I understood a little more about the situation surrounding the security of doing so.