Code 93 barcode symbology is designed to be an enhancement of code 39. Code93 encodes more characters and has higher data security than Code39. Code 93 is also known as USS-93.

Code 93 is designed to encode full ASCII character set by using combination of two characters to represent one.

Code 93 symbology requires a start character, two check digits appending your data and a stop character.
These two check digits are: first modulo-47 check character "C", second modulo-47 check character "K".

Code 93 can encode 26 upper case letters, 10 digits and 7 special characters as code 39:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
-, ., $, /, +, %, SPACE.