Jack Dorsey Launches a WhatsApp Messaging Rival Built On Bluetooth (cnbc.com)
- Reference: 0178305104
- News link: https://mobile.slashdot.org/story/25/07/07/2132201/jack-dorsey-launches-a-whatsapp-messaging-rival-built-on-bluetooth
- Source link: https://www.cnbc.com/2025/07/07/jack-dorsey-whatsapp-bluetooth.html
> In a [4]post on X Sunday, Dorsey called it a personal experiment in "bluetooth mesh networks, relays and store and forward models, message encryption models, and a few other things."
>
> Bitchat enables ephemeral, encrypted communication between nearby devices. As users move through physical space, their phones form local Bluetooth clusters and pass messages from device to device, allowing them to reach peers beyond standard range -- even without Wi-Fi or cell service. Certain "bridge" devices connect overlapping clusters, expanding the mesh across greater distances. Messages are stored only on device, disappear by default and never touch centralized infrastructure -- echoing Dorsey's long-running push for privacy-preserving, censorship-resistant communication.
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> Like the Bluetooth-based apps used during Hong Kong's 2019 protests, Bitchat is designed to keep working even when the internet is blocked, offering a censorship-resistant way to stay connected during outages, shutdowns or surveillance. The app also supports optional group chats, or "rooms," which can be named with hashtags and protected by passwords. It includes store and forward functionality to deliver messages to users who are temporarily offline. A future update will add WiFi Direct to increase speed and range, pushing Dorsey's vision for off-grid, user-owned communication even further.
[1] https://www.cnbc.com/2025/07/07/jack-dorsey-whatsapp-bluetooth.html
[2] https://t.co/P5zRRX0TB3
[3] https://github.com/jackjackbits/bitchat
[4] https://x.com/jack/status/1941989439237955773
This Is A Nonstarter (Score:2)
This is not comparable to WhatsApp. This is dependent on a short range and unreliable local network.
So what's the application for this? Students in class? People in a movie theater? This is a nonstarter.
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People at a protest/rally.
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Given that Apple sells its phones in China, mechanisms for governments to broadcast a "deny Bluetooth functionality"-signal have probably already been built into their devices. Maybe right along with those "presidential alert" mechanisms.
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> People at a protest/rally.
Hence the name BitchAt. :-p
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I came here to basically say the same thing. I read over some of the white paper to see if I was missing something that would make this more viable or useful and I'm just drawing a blank. I suppose if you were a group of people sitting around a table or maybe a small room and wanted to text each other everything in a non-ip-network setup and didn't need a record or something.
So yeah, I still can't figure out who this is for or maybe it was just to say hey, look what we made!?
Isn't it the same tech as Apple Air tag? (Score:2)
And those seem to work just fine right? It's something I wouldn't think would ever in a million years work but somehow it seems like it does.
Sure there are going to be gaps. The messaging might not always be real time like we get used to with IMs. But if it's more secure and less traceable I could see there being a market for it.
I mean sure criminals. Bitcoin and cryptocurrency is a trillion dollar industry on the back of money laundering. But there are billions of people living in authoritarian reg
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The use case is situations where centralized chat infrastructure is either offline or undesirable. Emergency situations where cell and/or WiFi infrastructure is knocked offline for extended periods. Quick, informal group chats where not everybody needs to know each other (think: concert; sports event). Repressive countries with centralized control of the internet.
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> This is dependent on a short range and unreliable local network.
This would not be a show-stopper if enough people made use of it, where statistically some of them always change locations and thus data could be stored-and-forwarded at times.
But I see a different show-stopper: The tragedy of the commons. If such network attracted a lot of users, it would also attract the scum of the Internet - advertisers, for example, who would immediately try to abuse this network for molesting people with endless SPAM messages. It would really take some very clever mechanisms to buil
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Great insight, thinking about the advertising "advantages".
Yes, Apple only is also a poor choice and very limiting factor.
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There are swift compilers for Windows and Linux, and you can write Android apps in it.
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> So what's the application for this? Students in class? People in a movie theater? This is a nonstarter.
Being in an area where the government is interfering with cell comms.
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Israel and Iran both shut down their internet during the ongoing conflict for multiple days. It's standard operating procedure to flip the "internet kill switch" as soon as a foreign bomb explodes on your soil. In a major city like Tehran, Tel Aviv, NYC, SF, London etc where you have 10,000+ people per square mile, you could easily have 20-30,000 people on a network like this with moderately low latency during a bombing situation.
But yeah if you live in the Houston suburbs where each house sits on a
At least one interesting use case (Score:2)
It can be used for local messaging when people don't want to connect to the internet or be traced - protests or events of that nature.
I can imagine the routing considerations would get very complex with large numbers of people. My intuition is that discovery of routes to a particular user would be hard with non-persistent "server" nodes and could result in a lot of broadcast traffic. I presume he's thought about that, but I have to guess that the real world behavior will be hard to predict.
Another interesti
Link shorteners? WTF? (Score:3)
Why on earth would you have to use a link shortener here, BeauHD? Give us the real link, directly, so we can see where we're going (or choosing not to go).
Briar (Score:4, Interesting)
Mmm, what about [1]Briar [briarproject.org]?
[1] https://briarproject.org/
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One could easily argue that Briar is a much better system.
But, it lacks iPhone and Dorsey support so...
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He wouldn't just steal the concept (and possibly code) from an open source project and then commercialize it, right?
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The reason Briar can't work on iOS is because of the Wifi support. If it only supported Bluetooth, it could be ported.
Dorsey is going to run into the same problem - his app will be severely limited by the range of Bluetooth, and as soon as he tries to add Wifi, Apple will block him.
Can be easily jammed with a $10 hardware (Score:2)
It won't work when it is needed to work.
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The same can be said about anything using RF to communicate.
Per FCC, maximum allowed power is 2.4mW (Score:2)
The maximum power allowed by the FCC for Class II Bluetooth is 4 dBm (2.5 mW). Your smartphones shall be legally compliant.
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I thought a hammer was just $5?
[Fill in the blank] Spring (Score:1)
It sounds like a modern version of Fidonet / UUCP over Bluetooth or Wifi Direct (kinda cool actually), but what would be the commercial value of something like this?
Probably a project designed to preserve the CIA/State Dept's ability to foster revolutions in even highly-State-controlled Internet countries.
Also maybe somewhat useful in a crisis situation... like a Grid outage, war or other "Event". Yikes...
gee humans are so predictable (Score:2)
90% of posts so far are negatively critical of this. An although some of those posts bring vaguely technical reasons (most of which are either irrelevant of easily worked around), we all know the REAL reason for all the hate is deceptively simple:
Jack Dorsey.
Not onlike all the hate directed towards spacex and tesla; Elon Musk.
Am I the only one fucking sick and tired of human nature ?
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Who cares about Dorsey? I hate it because it uses Bluetooth. Although I can see a potential value when used in countries with dictatorships. But luckily I live in the U.S. where that is highly unlikely to happen anytime soon.
Finally, an app I can use! (Score:2)
I'm always wanting to bitch at someone for something. Now I can use Bitchat!
I don't see anything about OSS? (Score:2)
Is it OSS? Can I build it myself? Because otherwise, fuck that. Even that only means that it's less likely to spy on me.
I keep Meshenger installed on my android phone (Score:2)
Just in case I need to join a mesh network [1]https://github.com/meshenger-a... [github.com]
[1] https://github.com/meshenger-app/meshenger-android
FireChat did it first (Score:2)
FireChat would like their idea back Jack.
Great idea (Score:2)
Flood the local 2.4ghz spectrum with excessive Bluetooth traffic managing a giant mesh network in a crowd, blocking everyone from actually using Bluetooth, or 2.4g wifi
Contrived technology (Score:2)
solves nothing, adds nothing, does nothing
Messaging added to existing tech? (Score:2)
Lot of people saying this won't or can't work, but isnt this similar to existing stuff that already does work?
Apple tags
Those State-run covid spread apps?
Etc?
Seems like this just removes the upstream connection and uses it for chat messages.
The "TestFlight"-link looks sketchy... (Score:2)
... and more like some cheap scam. Wrong link?