A file transfer setup using no internet, Bluetooth, or USB drive. The sender converts the file into encoded QR code frames displayed rapidly on screen. The receiver scans those frames continuously with its camera and reconstructs the original file. The camera is the only communication bridge. Works entirely offline... particularly relevant for air-gapped systems where network transfer isn't an option.show more

Thats how dolby digital film storage worked, every time the sprocket advanced the ccd sensor grabbed a frame of data from the film and every 24 sprockets reconstructed 6 channels of audio for one second of video. :)

Cryptocurrency wallets use this for AirGAP signature transfers.

Hey, I created a similar tool you can try:

how do you install it if it's airgapped with no usb?

It gets more fun when you realize you can just do this with an ir transmitter and simplify and speed up transmission rates. I built something like this a few months ago but couldn’t find a use case lol

Was using this tech in 1996

No such thing as air gapped. Check out WaveSpy

This open source?

In the film Johnny Mnemonic, the 3-picture unlock sequence is an advanced, distributed encryption system. It requires three specific, randomly selected images to act as the decryption key to access or download the highly classified data stored in Johnny's brain implant…

@AirGap_it wallet uses this.

Instead of this, try to do it with basic wired telephone connection, for example Julian Assange had a phone and pc but not an internet connection. If you need to send him file, how would you do it?

🔥

Funny, I Made this with ecrypted Files over an decade. But I can't remeber the reason for making it...🤣

Awesome well done. I wrote an air gapped crypto wallet that sent signed blobs to a net connected PC. The air gapped wallet is on a PC that has no wireless or Ethernet on it. People don't realize just how much info you can pack into a QR code. It's amazing.

imagine robots learning how to communicate with this while we're not looking, without our knowledge and essentially talking behind our backs without making a sound or being connected

Dope

It's good to mention that this file transfer method is very slow (10KB/s at max), and it's affected by camera quality, distance, lighting, angle, and stability. It's just good for transferring configs or keys between isolated devices.

Look outside, your neighbor steal your tralala pic with a telescope.

@callebtc you'll love this.

Nice! I love it! It reminds me of back in school, when we would send ringtones, GIFs, and games via IR, device to device. Nokia with Symbian was fun. Hmm, I should buy an N-Gage on eBay…🙃🤔

¡Tachán!

Are you retarded son ?

lol that's old im using it to update my software for 3 years now

it is interesting. Reminds me of a POC I made years ago, sending and receiving messages through ping (ICMP). But this one using QR is very usefull, specially for bypassing censorship.

This just might be the most retarded thing I have seen all week.

I would think P2P encryption would be easier, faster and more secure.

@shadowdefense What is the file size limit.

@grok Robopocalypse had something like this didn't it?

🫡🫡

It's looking awesome man

GitHub repo?

What's the bit rate of information exchanged?

Ese mismo principio lo aplica Google authenticator, para hacer un traspaso manual de los códigos a otro celular. (En el caso de la nota al ser archivos serían varios QR con más datos. Interesante opcion.

Proba pasar una película y nos contas como te fue allá por el año 35878 🤣