theodp writes "The EFF's Eva Galperin offers a brief primer on Traitorware, devices that act behind your back to betray your privacy. 'Your digital camera may embed metadata into photographs with the camera's serial number or your location,' writes Galperin. 'Your printer may be incorporating a secret code on every page it prints which could be used to identify the printer and potentially the person who used it. If Apple puts a particularly creepy patent it has recently applied for into use, you can look forward to a day when your iPhone may record your voice, take a picture of your location, record your heartbeat, and send that information back to the mothership.' She concludes: 'EFF will be there to fight it [Traitorware]. We believe that your software and devices should not be a tool for gathering your personal data without your explicit consent.'"