A injection site information cap includes a housing, a cover portion (200), an engagement portion (54) configured to couple to and cover an injection port (13) of an injection site, and at least one information element (24) on the cover portion that is positioned to be automatically sensed by at least one sensor (18) of the injection site when the engagement portion is coupled to or is being coupled to the medication injection port. Related apparatus, systems, and techniques are also described.
