Felicio de Costa, whose company is one of the tenants, 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, and 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. Soon, others among the 700 people expected to occupy the complex will also be offered the chance to be chipped. Along with access to doors and photocopiers, they're promised further services in the longer run, including the ability to pay in the cafe with a touch of a hand.

The whole process is being organised by a Swedish bio-hacking group which was profiled by my colleague Jane Wakefield recently. One of its members, a rather fearsome looking tattooist, inserted my chip.

First, he massaged the skin between my thumb and index finger and rubbed in some disinfectant. The he told me to take a deep breath while he inserted the chip. There was a moment of pain - not much worse than any injection - and then he stuck a plaster over my hand.

Before trying my chip out, I wanted to know more about the thinking behind it. Hannes Sjoblad, whose electronic business card is on his own chip and can be accessed with a swipe of a smartphone, has the title chief disruption officer at the development. I asked him whether people really wanted to get this intimate with technology.

"We already interact with technology all the time," he told me. "Today it's a bit messy - we need pin codes and passwords. Wouldn't it be easy to just touch with your hand? That's really intuitive."

Sounds great, doesn't it? Or does it? Fortunately, science fiction authors have been exercising their imaginations and in the process, helping us imagine this future. Which is here. Now.

In the 2014 novel Spark, author John Twelve Hawks details the characteristics of a "Freedom ID" (i.e., an implanted RFID chip):

About a third of the people in Manhattan have replaced their Freedom Card with a radio-frequency chip about the size of a vitamin pill. The chip is usually inserted beneath the skin on the back of the hand, and the procedure leaves a distinctive scar... The chip is detected whenever you take the subway, enter a department story, or walk into a government building...

Also, sf author Neal Stephenson referred to an implanted credit card in his 1995 novel The Diamond Age.

I've written a number of articles on the implantation of RFID tags over the years:

• RFID Tags Proposed To Halt Blackmarket Cadaver Trade
  The law of supply and demand has induced some people involved in legitimate medical research on bodies willed to science to seek illegitimate profit.
• Baja Beach Club Implants VeriChip In Customers
  The Baja Beach Club in Barcelona, Spain is the first business to use the VeriChip System to grant customers access to VIP areas and provide an easy payment option.
• VeriMed Implanted RFID Dogtags Studied By Military
  The VeriMed chip will have an encrypted 16-digit identification number.
• VeriChip Chairman Proposes RFID Chips For Immigrants
  "We have talked to many people in Washington about using it...."
• Microchips To Be Implanted In UK Convicts
  We have wanted to take advantage of this technology for several years...