⚡️💬 NEW - New Signal code suggests they're adding a paid feature for people who don't want to register with a phone number. This comes after their CTO Ehren Kret said that Signal was looking for a way to induce a cost for signing up without a phone number.

Unreleased code in Signal's public Android repo describes a "Signal Login" purchase screen: users either make a one-time in-app payment or register with an account key they already own.

Signal hasn't announced it yet.