Graafstra implanted himself with two radio-frequency identification
tags (RFIDs), similar to the sort of chips used in cats and dogs,
five years ago.
His family doctor used a pet injector to insert the second one in
his right hand later that year.
The chips help him do things like open the door to his home, log
onto his computer and start his motorbike.
"I have the skill to be able to utilise this technology in my daily
life," he says.
"All I've done is move the RFID tag from my wallet, or my pants
pocket, to a skin pocket."
Several Australians are among those to have embraced the
technology, he says.
Gasson, also in Australia for the conference, had an RFID-based
implant put in his hand about a year ago, originally for access to
his UK-based lab and mobile phone.
Later, as an experiment, he deliberately infected the chip with a
virus and found he was able to pass the infection on to the
laboratory's security system.