Felicio de Costa ... arrives at the front door and holds his hand against it to gain entry. Inside he does the same thing to get into the office space he rents [at Epicenter, a new hi-tech office development in Sweden]. He can also wave his hand to operate the photocopier. That's all because he has a tiny RFID (radio-frequency identification) chip, about the size of a grain of rice, implanted in his hand. On the day of the building's official opening, the developer's chief executive was, himself, chipped live on stage. The whole process is being organised by a Swedish bio-hacking group. While some of the people around the building were looking forward to being chipped, others were distinctly dubious. An older woman ... saw little point in being chipped just to get through a door. But [Epicenter official] Hannes Sjoblad says he and the Swedish Biohacking Group have another objective - preparing us all for the day when others want to chip us. "We want to be able to understand this technology before big corporates and big government come to us and say everyone should get chipped - the tax authority chip, the Google or Facebook chip." Then, he says, we'll all be able to question the way the technology is implemented from a position of much greater knowledge.