HP also now provides disclaimers on the product pages for most of the printers that it sells, stating that the device “is intended to work only with cartridges that have a new or reused HP chip” and uses Dynamic Security “to block cartridges using a non-HP chip.” “Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. A reused HP chip enables the use of reused, remanufactured, and refilled cartridges,” the disclaimer says, adding ...