Microchips have invaded the planet. RFIDs (radio-frequency identification devices) appeared early this century and have gone on to conquer the world of transportation and logistics, enabling goods to be identified and traced. Now a new generation of transistors can be inserted under the skin. Measuring 12 x 2 mm, the transistors have all kinds of uses. With the consent of their employees, a good number of companies have introduced them in the United States, Sweden and Belgium. Depending on the configuration, the chip implanted beneath the skin on the hand allows the wearer to unlock doors and operate certain equipment, clock in at the office and pay for lunch at the canteen or coffee from the machine. This streamlining and simplifying of procedures must be weighed against the sense of excessive control and the loss of a certain amount of personal freedom. The introduction of these practices in response to economic imperatives raises ethical questions and only makes sense if careful thought is given to the ultimate aim. Food for thought.