Abstract: This invention relates to a container (10) for a medication delivery (110) device comprising an optical reader (111), where said container comprises a code information element (20) carrying a set of information readable by said optical reader where the container comprises at least one more code information element (20) carrying the set of information readable by said optical reader. The invention further relates to a method of applying code information elements onto the container and to a method of reading a code information element. The code information elements can be aligned with at least one protrusion on the container, or are aligned with at least one cavity on the container. Alternatively or additionally, the code information elements are juxtaposed to one another. Hereby, an optical code reader, embedded in the medication delivery device, will be able securely to read the information carried by means of image processing software compiling and combining more code information elements.

Abstract: The invention relates to a marking of cartridges, carpules or any kind of package. The marking can be in an electronically readable form while being transparent. Hereby a marking with improved security for avoiding reading errors which ensures a mandatory visual inspection of content is obtained. The transparent conductor can be in form of a polymer, an ITO and the like. These transparent conductors are used in an improved marking technique, which further improves reading security. The invention may e.g. be used in connection with medication delivery devices for self-treatment of a disease, e.g. diabetes.