Post-apocalyptic scenario? Internet outage? Bit of a geek looking for a new challenge? You’re in luck.

So most of us won’t be doing it this way any time soon, but if you’re in a pinch without a web connection, you can still make bitcoin transactions with an old shortwave radio.

Twitter user @NVK announced:

BAM! #Bitcoin sent over 7.077Mhz via #JS8Call to @SamuelPatt



Sweep: https://www.blockchain.com/btc/tx/82c043a82770e9129633d2c7259818b404d467fb8cab963773c574857a96202e …



Toronto,CAN => Michigan,USA [40W:#SnowStorm]



Bcuz its a brainwallet made ahead of time, with bearer pk I don’t require internet to broadcast this transaction at the time i’m sending

He goes on to warn that brainwallets aren’t very safe unless you’ve set them up properly – anything you’re able to remember easily can probably be brute-forced by a determined computer. But it does the job in an emergency.

You’ll need your radio transmitter, plus a protocol that connects it to a computer so you can send the tx data over the airwaves (@NVK used JS8Call).

It looks like, in this instance, the sender actually just transmitted the brainwallet/mnemonic, enabling the recipient to access the Bitcoin address directly, rather than making a transaction. Not recommended, but it’s a great proof of concept. And, as the Lightning Network Torch game – played entirely over Twitter – demonstrates, there are more and more ways to send and receive crypto now than ever before.

As Gabor Gurbacs, digital asset strategist/director at VanEck/MVIS and perennial source of information and opinion on the bitcoin ETF, replied to Nick Szabo’s retweet of the test: ‘It doesn’t get any sexier than this. Period.’

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