Barcodes in Menus?

Most people read about using barcodes in restaurant menus and see some measure of utility in it. It's faster, easier, uses machines instead of people. So goes the logic behind The Deli Touch pen. If that isn't enough, try the video. I can't speak Japanese but it's worth watching just for the end.

Someone says "barcoded menu" and "scanners for all customers" and I hear "prank waiting to happen". How hard can it be to substitute your barcodes for the ones in the menu? Think barcode fonts and Avery laser labels. Take a menu home, scan the barcodes, and figure out what they're doing. Re-do it for them and swap out the menus.

This is from someone who "played with" the CueCat back in the day...