Ever walked into a room and felt completely invisible, even though you're literally the most fabulous person there? Yeah, me ...

They call themselves body hackers, people who say they're pushing the boundaries of implantable technology. By that I mean, they insert everything from computer chips to LED lights into their bodies.

A curious crowd lingered around Amal Graafstra as he carefully unpacked a pair of gloves, a small sterile blanket and a huge needle. A long line of people were waiting to get tiny computer chips ...