The MSI/Plessey barcode type is mainly used in shelf edge labelling.
The font package includes 'Standard' and 'Tall' versions in both Type 1 and TrueType formats.
Standard characters are:
0 1 2 3 4 5 6 7 8 9 A B C D E F [ ]
Any Macintosh running OS 7 or later, including all versions of OS X.