Elon Musk's X has launched X Numbers, a new feature that lets users share a secret eight-digit code so they can be contacted on XChat without sharing their personal numbers or following one another.
This comes months after Meta's WhatsApp introduced a username feature that lets users find people in the app by their unique names instead of their phone numbers. WhatsApp, which says it has more than 3 billion users globally, has until now allowed anyone with a user's phone number to contact them.
