A tattooist at work in Stockholm, but on this occasion art is not involved. He is implanting an RFID device (ID chip) into the hand of a volunteer who joins a growing group of Swedish "cyborgs", part organic, part biomechatronic (as in the Six Million Dollar Man, for instance). He will now be able to activate his smartphone remotely, and when he gets home, he will be able to open his front door just by waving his hand at the sensor. The Swedes are not alone; a US company is producing the BioStamp, a digital tattoo "wearable" that will alert you to sunburn risk, amongst other things. Maybe some of this sounds familiar? For years, animals have been implanted with ID chips, have worn them in their ears, around their necks and ankles and have swallowed them, unwittingly carrying their ID with them wherever they go. It opens doors for them too! Does this mean that our milking parlours are full of cyborg cows? Cyborgs, apparently, can have restored or enhanced function as a consequence of their artificial bodyparts, and some have suggested that cyborg technology will form part of future human evolution (and I thought I just wore contact lenses!) Stephen Hawking, meanwhile, sees AI as the evolutionary future, and not at all a happy one. For those who cannot get cows out of their heads, that is Artificial Intelligence, not the AI we all know and love. Technologies often do not appeal at first appearance. Artificial insemination evoked just as much controversy as any other, but you will have to take my word for that as, unfortunately, I can no longer find the Punch cartoon that is proof. Together with piercings, tattooing is an ancient technology, one that may have been resisted at first but more recently has even received Royal assent (at least in Denmark: the Queen's father, pictured, and son both sport tattoos). this, though, is probably the first time that a real purpose has been proposed. Will it catch on? I am no Luddite, I am prepared to put my hand up and be counted! Furthermore, any suggestion that I am a fraud will be contested, even if the tattoo is, in this case, a complete fake. Another wonderful example of wearable technology!