Can't wait to daily-drive a Linux phone with this.
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Finally, Signal will catch up to XMPP.
"To register on Signal Desktop, a phone number will still be required."
Then this is just a whole lot of not much.
Users have been asking Signal to allow accounts to be created without a phone number ever since it was released. I just want to use Signal with my kids who don't have phone numbers, dude. Signal already have usernames and encrypted client-side contacts.. What's the holdup? Why insist a phone number is still required?
They want to be able to link accounts to your identity, obviously
You know, I've been thinking...
Signal's end to end encrypted, yes... But we do the key exchange process through Signal's servers, don't we? How do we know they don't store copies of the keys? Does the client have a mechanism in place to make sure the man in the middle doesn't do anything funny? I haven't actually delved very deep into the code, but it sounds like I should.
And... Sure, their server code may be open source too, but nobody guarantees that that's the code actually running on their servers.
Here is an overview of all audits done on Signal:
https://community.signalusers.org/t/overview-of-third-party-security-audits/13243
No recent server audits really. They are pretty public about information requests made by the government and their responses though, and from what I can see the only pieces of information they have shared with the government to this point are the time of account creation and the date of the last connection to Signal servers:

You can check more of their responses from here:
https://signal.org/bigbrother/
A US organization can be required by law to lie when they are contacted by the government under extreme penalties if they don't do as they are told. There is no proof that Signal is really posting their real demands. They could be actually required to post everything except certain demands marked secret.
How do we know they don't store copies of the keys?
I don't know how Signal is built, but you can establish a secure communication channel through a channel that's being listened in on, meaning the server doesn't need to ever see the keys. Look up Diffie-Hellman for an example, an algorithm that lets two actors establish a shared secret without communicating enough information to reconstruct the secret.
So if the client uses a secure key exchange algorithm (or straight up asymmetrical encryption) the server can't just grab your keys - you just need a secure way to verify that your keys actually match, because what they could do is a man in the middle attack where they establish a secure channel with you and the person you're messaging, and decrypt and reencrypt messages going both ways, being able to listen in and modify messages.
They ship their app with blobs, so we cannot verify what their app is doing.
My thinking also. Corps/gov can also link identity to emails of course, but it's much harder due to email aliasing and the ease of new account creation.
Mobile phone numbers are far more personal - people generally only have one or two max and generally keep them for very long periods.
If its the true reason, it would make Signal not much better than Meta's WhatsApp, which gleans value from its users by noting metadata tying users to one-another by who they contact, when, and how often to extrapolate social circles and relationships. But Meta goes further in I think also tracking location, etc, and obviously has much more personal data in the linked phone numbers of many FB/Insta accounts.. Signal could potentially be doing some of that to a degree with IP geolocation... Not great.
TLDR: its the one thing stopping me from trusting Signal entirely as a benevolent actor - they want and 'need' your personal phone number. I use it still, as its the best available mainstream option, but I mention this concern when recommending it to those seeking privacy.
They will also likely require a captcha done using webview, exposing many hardware identifiers to Google.
They will once again claim this is to protect against spammers and not to track people.
Signal is obviously a honeypot, as it never would have taken this long to release a desktop App not linked to a phone if it weren't a honeypot, and they still are requiring a phone number. Any "privacy" company that adopts real privacy features only after huge pushback from the privacy community years later is likely a honeypot. Look at "tuta," which a former government worker testified under oath is a honeypot: no accepting of Monero ever. Finally, when called a honeypot, they make a deal with a third party to accept Monero.
Signal is probably releasing this because whoever owns the honeypot wants to link desktops to phone numbers, allowing the desktops to be hacked with something like Pegasus as well.
Does anyone remember that accidental LinkedIn post showing all the Apps that one company was able to hack? And it showed WhatsApp, Signal, Telegram, etc... And it was always based on a phone? And this photo was accidentally posted online before being scrubbed? I forget the details on it and if anyone remembers, please post about it to jog my memory. Well, now perhaps that group wants to hack laptops too.
I don't believe this is anything other than more bullshit. It wouldn't surprise me if they also blocked VOIP for registration. Fuck Signal.
The new app design will still be necessary if that were to become a feature, so this is a halfway step either way.
One thing this lets people do is utilize burner numbers without a physical phone tied to it. They can use their provider's web-based UI to receive text messages for the signal confirmation, but can then use the app solely from a desktop.
This also paves the way for an official command-line client, library or SDK that could be used for automation.
Thanks for those pointers. I like the idea of an official CLI for instance to perform automatic regular encrypted backups, or the possibility of interfacing messages to other systems. But I presume they'd have to be careful to avoid opening the door to automated messaging spam bots.
I just use SimpleX for kid stuff. No phone/numbers necessary, just uses random QR codes as the identifier, makes sharing and setup very easy.
I'm excited but I still detest phone number requirements. Android RCS is a huge improvement over SMS/MMS but what I'm still hoping for is federated end to end encrypted chat to become mainstream. We figured out email, we can figure out text, audio, and video chat
To register on Signal Desktop, a phone number will still be required. However, this can be either a mobile number or a landline, including basic mobile phones or dumb phones. This will make Signal accessible to users without a smartphone.
What's the point? Something they don't understand is that phone verification only fucked up people, and that spams and big entities have millions of proxies and phone numbers to use and flood the network
I assume the point is that by requiring a phone number it's a drop-in replacement for WhatsApp. There's no need to register an account, just install a different app and you're good to go.
It's not the biggest barrier, but for some people it is one.
Just install signal-cli :P
Why is it a different version
finally, been waiting for a signal desktop-gui for a long time....hope its available on linux
It will still require a phone number, this is a nothingburger. Meanwhile, there's still no way to use Signal on an android tablet.
Though it’ll still be Electron bloatware, chewing up RAM and CPU cycles for tasks a native app could have done on a potato.
so wait, you're saying that the equivalent of an IRC client could run with less than 16 GB of RAM?
Well, in the case of an open source donation-supported project, it gets a pass from me.
Can't really ask more optimisation from the devs on top of what they already deliver imho, I'm just glad to have Signal
Maybe starting a native app would be terribly difficult for them
Use Delta Chat instead. No phone number required, completely anonymous.
https://f-droid.org/packages/com.b44t.messenger
Or use Arcane Chat, which is a Delta Chat client with more features: https://f-droid.org/packages/chat.delta.lite
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