[null and void]

I’m open to other options to make the bills easily distinguishable to a blind person.

Say square corners vs notched corners vs beveled corners vs rounded corners?

[TXnMA]

"I’m open to other options to make the bills easily distinguishable to a blind person."

Sounds like a worthwhile project!

Wonder if bumps of extra paper-pulp bulk could be embossed-in to create permanently-raised or thickened Braille numbers? That would also make counterfeiters' jobs harder, I would think...

Could metallic/magnetic content in those bumps also aid machine readability?