WhatsApp rolls out username key feature to block unsolicited messages

WhatsApp has introduced a new username key feature designed to protect users from unsolicited messages from strangers. The feature requires anyone trying to contact you for the first time using your WhatsApp username to enter a key before a chat can begin.

How the username key works

A username key is designed to protect users from unsolicited messages from strangers. When activated, anyone trying to contact you for the first time using your WhatsApp username must enter the key before a chat can begin. However, the feature does not affect people who already know your phone number, have previously chatted with you, or are in the same group as you. People who scan your QR code or receive a message from you first can also contact you without needing the key.

In essence, the username key is a privacy tool aimed at strangers, not a barrier to communication with people you already know.

How to activate and manage the username key

WhatsApp users can create and manage their username key only from their primary mobile device. The feature is currently unavailable on WhatsApp Web and desktop apps. To activate it: Open WhatsApp Settings. Tap Account. Select Username. Turn on the Username Key option. WhatsApp automatically generates the key, meaning users cannot create a custom code. If you prefer a different key, tap “Get a different key”, and WhatsApp will generate a new one.

Once your username key is activated, you should share it alongside your WhatsApp username whenever you want a new person to contact you. Without the key, first-time contacts will not be able to start a conversation with you through your username. WhatsApp also will not notify you if someone fails to contact you because they do not have the key.

Users can update or delete their username key at any time by returning to Settings > Account > Username. Changing or removing the key does not affect existing chats. People you have already communicated with can continue messaging you without needing the new key.

Default setting for underage users

WhatsApp also noted that if an account is linked to a Meta account identifying the user as under 18, the username key is turned on by default, though it can still be changed or disabled at any time.

For Nigerian users, this feature adds another layer of control over who can reach them on the platform, reducing spam and unwanted contact from strangers without disrupting existing conversations.