It turns out that the idea of putting digital rights management (DRM) into your printer ink is as bad as it sounds. "Here’s the kicker: if you cancel, your ink stops working. You read that right; as soon as your billing cycle ends the printer will not accept the ink anymore." You're also sending a whole lot of data to HP - page count, page type, and more. That's because there are limits on the number of pages you can print as well. "It’s easy to get trapped into overages... It’s a strange proposition that every time I go to print, I now feel the need first to check if I have enough pages left in my plan."