## MSI/Plessey

MSI/Plessey supports digits as its character set. It's more common to use it with one or two check digits as in below.

## MSI/Plessey Check 10

This is MSI/Plessey with a modulo 10 check digit.

## MSI/Plessey Check 10-10

This is MSI/Plessey with two modulo 10 check digits.

## MSI/Plessey Check 11

This is MSI/Plessey with a modulo 11 check digit.

## MSI/Plessey Check 11-10

This is MSI/Plessey with a modulo 11 check digit followed by a modulo 10 check digit.