In the US all bills are exactly alike as far as thickness, size, etc. New bills are being printed that have large numbers and high contrast for those with some usable vision, but there is no way to tell the bills apart by touch.
Aug 12 2005, 2:41 PM
In the UK and Australia, different notes are different widths and lengths but it's something you have to learn, or you can use a gadget called a note gauge to measure them.
In Canada they are rolling-out a new paper currency that embosses a select number of Braille cells for each denomination.
I saw in the movie Ray that Ray Charles would insist on being paid in one dollar bills so that his employer couldn't pull one over on him. What it comes down to is in the US you would need someone else's assistance to determine the different bills and then develop a method of keeping them.