Canon does not do this. They also let you opt into the feature that blocks third party cartridges. You read that right. The feature is opt-in. Coincidentally,

Canon does not do this. They also let you opt into the feature that blocks third party cartridges. You read that right. The feature is opt-in. Coincidentally, many HP and Canon laser printers use slight variations of the same toner cartridges such that third parties can support both printers with the same cartridges: https://www.shop.xerox.com/supplies-accessories?brand=6346 https://www.shop.xerox.com/supplies-accessories?brand=6346 I am curious if this is also true for the inkjet printers, but finding out would probably involve buying every cartridge and comparing. I cannot justify that expense to sate my curiosity.