Speaking to Cointelegraph, F418 said he experimented with body modification and LN payments for fun. He is not advising Bitcoin enthusiasts to take the Layer 2 payments network, LN, into their own hands as he did. “The use is just to show that it’s possible and you can do things like that.” He added that most people carry cards, it’s only his hand that has the wow factor:

“It’s funny to give a presentation because sometimes I do presentations about payments and talk to people who work in banks, and they make ‘big eyes’ if they see it [my hand]. I don’t need the implant.”
Cointelegraph first met F418 in its native Switzerland at the LN-friendly Plan B Lugano conference. His attempts to push fail because the first F418 implant was “faulty”. F418 visited a medical professional to have the implant surgically removed before trying again.

The second attempt succeeded. The chip sits neatly in his left hand and he can now make LN payments – without reaching for his Bolt Card or smartphone. But does it hurt, Cointelegraph asked. He replied, “I don’t feel anything — even when I go to the gym.”

F418 taps the back of his phone to pay for two beers and some chips. Source: YouTube
However, F418 does raise some risks to the procedure. While the process is medically safe, “the only problem with implants is that you can’t really make them safe. It’s not the same security as a bolt card—you can just pull out the LNURL; it’s not safe.”

In addition, if you make a mistake during the implantation process, it is not a good idea to insert and remove the chip from the body. It can cause damage or infection, F418 explained, so it’s best to get it right the first time.

In short, the NFC chip implant works identically to the F418’s hand, enabling it to make LN payments without the need for a physical device such as a smartphone or card. They can simply place their hand near a compatible NFC reader to start paying. It is arguably the most convenient way to pay Bitcoin, allowing for quick and easy transactions without the need for any additional equipment.

Use cases of NFC or Near Field Communication technology have popped up in the bitcoin world. Indeed, NFC payments over LN have grown in popularity since the introduction of the Bolt Card, which was first tried out at lunch in the Isle of Man and is now available in “Bitcoin Country,” or El Salvador.

F148 shows the raised microchip inserted into Cointelegraph during the call. Source: Google is dead
It’s easy to set up an NFC card, sticker, or even a sock to work for payments (see below Twitter video). However, it should be noted that the NFC implant in the human F418 is unique. F418 has made the entire process open source and accessible – including the health warnings – on GitHub. He called the operation “Lightning Paw”.

LN is a layer two payment protocol that runs on top of the Bitcoin blockchain. It allows for near-instant and free transactions by enabling users to make multiple payments without having to wait for transactions to be confirmed on the blockchain. Basically, LN creates a network of payment channels between users, allowing them to transact directly without having to record every transaction on the blockchain.