Pay $5, get a code that allows creating a single account, enter the code somewhere in the app to allow using a user name in place of the phone. This limits spam and, as this code can also be sent to another person, there is a way to hide the relationship between payer and final user. No need for cryptocoins, NFTs, or other stupid things.
> One challenge has been that if we added support for something like usernames in Signal, those usernames wouldn’t get saved in your phone’s address book. Thus if you reinstalled Signal or got a new device, you would lose your entire social graph, because it’s not saved anywhere else. Other messaging apps solve this by storing a plaintext copy of your address book, social graph, and conversation frequency on their servers. That way your phone can get run over by a car without flattening your social graph in those apps, but it comes at a high privacy price.
Like it's more effort, but not some intractable problem, at least stated like this.
Not being forced to add a contact to the phone address book is an extra advantage, as address books are one of the first victims of spyware apps...
Also, with usernames and a desktop app, there is no reason to require a smartphone at all! Seriously, my Android phone is the least secure platform that I use at the moment (lots of proprietary stuff, spyware prone, ...)
They could even sell existing users UIDs so they could share their contact info without sharing their phone number if they so desired, e.g. via a website. If they charged some nominal fee users could reset their UID. Maybe with escalating prices if done in short succession to make revenue and discourage abuse.
I thought privacy was supposed to be available for free?
Correct. They are asking money already.
Signal justifies not allowing usernames as (partially) an anti-spam measure and I assume they also be doing it to limit the amount of accounts created and, so, the use of server resources for which they pay. Selling these accounts solves both problems.
Also allows us to actually use Signal for groups, I don't like the idea of large groups knowing my phone number.
It seems unlikely that big tech and telecom corporations, whose lifeblood is personal data harvesting, or government, with surveillance states becoming the global norm, are going to agree to adopt a genuinely secure end to end encrypted messaging standard or protocol on the best devices ever to facilitate their practices.