Do P2P Messaging apps that don't require the internet exist?
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turbowafflz@lemmy.worldreplied to Guest on 30 Jan 2025, 23:10 last edited by
I mean this is a terrible answer, but DS pictochat fits that
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lazerdickmccheese@sh.itjust.worksreplied to Guest on 30 Jan 2025, 23:38 last edited by
No joke, I was talking about this recently. I feel like niche groups (me included) are just going full-circle back to the DS days
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thatguynamedzeus@feddit.orgreplied to Guest on 30 Jan 2025, 23:52 last edited by
yes, a lot of people were using those kinds of apps during the free hong kong protests, they go from device-to-device with no internet in between.
No idea what the app is called, but apps like those exist
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quazaromega@lemy.lolreplied to Guest on 30 Jan 2025, 23:56 last edited by
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empatheticteddybear@lemmy.worldreplied to Guest 30 days ago last edited by
Bridgefy?
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bad_news@lemmy.billiam.netreplied to Guest 30 days ago last edited by
Possibly?
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merde@sh.itjust.worksreplied to Guest 30 days ago last edited by
wouldn't a cheap walkie-talkie be more practical in that situation?
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master@lemm.eereplied to Guest 30 days ago last edited by
Isn't this what airdrop was?
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thatguynamedzeus@feddit.orgreplied to Guest 30 days ago last edited by
wouldnโt a cheap walkie-talkie be more practical in that situation?
That's not secure or encrypted
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thatguynamedzeus@feddit.orgreplied to Guest 30 days ago last edited by
scratch telegram off that list, but Session messenger there instead.
Telegram isn't private, one guy has the master key to the whole thing
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idkwhatusernametoputherelolol@lemmy.dbzer0.comreplied to Guest 30 days ago last edited by
You can encrypt a radio.
Rattlegram is an app on iOS/Android that alllows converting text to audio and play it over your phone's speaker
Secure Space Encryptor (SSE) (known as Paranoia Text Encryption on iOS) is an Open Source app that can encrypt text.
- Use SSE to encrypt text
- Copy-Paste the Ciphertext to Rattlegram
- Sent it over the radio
- On the other end, use Raddlegram to turn the audio back to the ciphertext
- Use SSE to decrypt.
Voila! Off-Grid Encrypted communications.
Warning: Encryption over radio is illegal in many countries
(but fuck the law lol, who cares)
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idkwhatusernametoputherelolol@lemmy.dbzer0.comreplied to Guest 30 days ago last edited by
Briar (Android Only) - Uses Bluetooth, Wifi, or Internet via Tor to communicate. You can theretically create a large mesh group. Think of protests where the government shuts down the internet.
Also: You can send encrypted text over SMS using Secure Space Encryptor (SSE) (known as Paranoia Text Encryption on iOS). It's an Open Source app that can encrypt text.
- Type text
- Copy the Ciphertext
- Send and tell the recipient to use SSE fo decrypt.
You both have to share a password/passphrase over a secure channel, then use that to encrypt and decrypt.
Or PGP (there are mobile apps), but they aren't quantum resistant. If someone intercept and stores them, it could be decrypted later. So I recomment Symmetric Encryption like AES 256 (so use SSE for better security, since they use AES 256)
You can also encrypt a radio:
Rattlegram is an app on iOS/Android that alllows converting text to audio and play it over your phoneโs speaker.
As mentioned before, SSE.
- Use SSE to encrypt text
- Copy-Paste the Ciphertext to Rattlegram
- Sent it over the radio
- On the other end, use Raddlegram to turn the audio back to the ciphertext
- Use SSE to decrypt.
Voila! Off-Grid Encrypted communications.
Warning: Encryption over radio is illegal in many countries
(but fuck the law lol, who cares)
There's also Meshtastic, but it has much shorter range, but, in the USA at least, they aren't "Ham Radio" so they (supposedly) can be encrypted legally.
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mrpalmer16@lemmy.mlreplied to Guest 30 days ago last edited by
This one works, if you don't mind a little diy and texting only: https://circuitmess.com/products/chatter-lora-communication-device
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elperronegro@lemmy.worldreplied to Guest 30 days ago last edited by
Check out Reticulum Network Stack using LORA radio. Works really well.
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root@lemmy.worldreplied to Guest 30 days ago last edited by
Meshtastic can be encrypted and is LoRa based. Can easily hit nodes dozens of miles away with a good line of sight. It also relays messages across nodes to reach even further distances.
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foremanguy92_@lemmy.mlreplied to Guest 30 days ago last edited by
If you don't want to use internet the only ways are to use radio or deploy your own network infrastructure (optic fiber or cell tower), so there's no really any messaging app that can be used without internet. Briar can use Bluetooth but with a limited range, needing an actual dense mesh network.
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bad_news@lemmy.billiam.netreplied to Guest 30 days ago last edited by
Yes, this is totally what I was thinking of!
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monkdervierte@lemmy.mlreplied to Guest 30 days ago last edited by
Briar has a mesh mode.
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Yes, it's possible. To be honest, I find it very sad that we have grown so dependent on ISP and big telecom companies to have a working network.
In theory, you could have an infrastructure in your neighborhood and be able to play Quake with your neighbors without making use of the phone line at all, and with a very efficient connection too! you'd just need cabling connecting the apartments/houses. It's a pity that's not a standard thing when designing residences.
You can technically do it with Wifi and mesh networking though... there are projects like B.A.T.M.A.N, see https://www.open-mesh.org/
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