A tactile identification coding for a cartridge for use with a drug delivery device is described. The tactile identification coding includes the cartridge containing a drug and an identification coding located on the cartridge, the identification coding including a logical symbol to visually indicate to a user the type of drug contained in the cartridge. A cartridge holder may also be included to receive the cartridge, the cartridge holder having a second tactile identification coding that corresponds to the tactile identification coding on the cartridge.
