This problem could be avoided by designing the machines to be as visually simple as possible. Remove all unnecessary features and homogenize what remains. This would have the incidental perk of making them look much better.
If this isn't enough, a photo of the machine could be shown on the screen and the user asked to verify that the real thing looks identical.
explains why BOA attaches all sorts of funny devices on their ATM machines. but i think your neighbourhood/nightclub atms are perfect targets for these criminals. ugh
Hmmm. I didn't wait for it to load. <-- See that? That's my initial comment, then I thought better of it, came back and waited for the thing to load; and I'm glad I did. It was a very informative and fast read. It should be made into a web site. PDFs drive me nuts.
If this isn't enough, a photo of the machine could be shown on the screen and the user asked to verify that the real thing looks identical.