Here are a few things you can do with your new-found number-entry tool:
Barcode symbologies that the CueCat reads:
I bought 3 nice, new, and almost shiny CueCats in a package deal from eBay.
As far as a tutorial for hacking CueCats, here goes.
I bought a dog the other day...I named him Stay. It's fun to call him... "Come here, Stay! Come here, Stay!" He went insane. Now he just ignores me and keeps typing.
— Steven Wright