Cartridge take-back programs often lose track of a unit the moment it leaves the customer. NFC tags restore that visibility. This guide explains how consumables brands, remanufacturers and retailers use NFC to design take-back incentive flows, scan collection points, verify refill and reman cores, and produce the reporting that EU circular economy rules increasingly demand. It covers tag placement, reader choices, tietoarkkitehtuuri, implementation phases and the compliance evidence a closed-loop printing program needs.