At least for a short time, Canon will help you bypass restrictions on ink cartridges

The ongoing chip shortage continues to affect a wide range of industries, including printer maker Canon who had been shipping ink cartridges without chips inside. This means that they cannot verify toner levels or authenticity anymore. In fact, Canon is sharing how to bypass warnings and error messages that appear when using cartridges that lack the required chips.
“Due to the worldwide continuing shortage of semiconductor components, Canon is currently facing challenges in procuring certain electronic components that are used in our consumables for our multifunction printers (MFP),” a Canon support website says in German. “In order to ensure a continuous and reliable supply of consumables, we have decided to supply consumables without a semiconductor component until the normal supply takes place again.”
How to Bypass Error Messages
Depending on the model, when an error message occurs after inserting toner, users can press either “I Agree,” “Close,” or “OK.” When users press that button, the world does not end. Rather, Canon says users may find that their toner cartridge doesn’t give them a low-toner warning before running empty.