People can no longer expect random strangers to message them on WhatsApp just because they guess a username. Meta is creating a new security feature that acts like a digital bouncer for your messages. According to a recent update from WABetaInfo, WhatsApp is adding a feature that will require new contacts to enter a “Username PIN” before they can message you. This change isn’t just cosmetic; it will change how we connect on WhatsApp, the world’s most popular messaging app.
For years, WhatsApp’s biggest strength was also a weakness: your phone number served as your ID. To chat with someone, you had to share your number, which could lead to spam and privacy risks. Meta is working on introducing usernames, like those on Telegram or X, to address this issue. However, they realised another problem: if I use a username like @LagosBoy, how do I prevent many random bots from messaging me?

Enter the “Username PIN.”
Based on the leaked interface [see above image], here is the new workflow:
- The Setup: You create a username (e.g.,
@Wabetainfo) to mask your phone number. - The Lock: You set a secret 4-digit PIN (e.g.,
1234). - The Interaction: If a stranger tries to message you for the first time using your username, WhatsApp will block the chat window with a prompt: “Enter their username key first.”
- The Result: Unless they have that 4-digit code (which you would have to give them verbally or via another channel), they cannot message you.
Looking closely at the screenshot provided from the beta test:
- Searching for Contacts: The interface shows a loading spinner, indicating the app is searching the global database, not just your phone contacts.
- The Input Field: A required 4-digit field is required. It states, “Since you haven’t interacted with this account yet, you need to enter their username key first.” This shows the feature is meant for reaching out to people you don’t know yet. It does not affect your friends, family, or anyone who already has your number. It is only for the “username” system.
Why This Matters
To understand why this is necessary, you have to look at the data.
- Spam Concerns: In 2024, reports noted that spam on WhatsApp (including marketing messages and scams) increased by over 40% globally.
- Telegram Issue: On Telegram, usernames are public. This makes it easy for spammers to send lots of unwanted messages, known as “crypto spam.
By adding this PIN, WhatsApp introduces a form of Two-Factor Authentication (2FA) for social interactions. This extra step creates a barrier. Spammers usually send thousands of messages quickly. If they have to manually enter a 4-digit PIN for each target, it makes their spam efforts much harder.
Using WhatsApp to Filter Customers and Block “Unwanted” Admirers.
For the average Nigerian user, this feature is beneficial for two main groups:
- Business User: If you use WhatsApp for your business, you may want customers to message you freely. You can turn off the PIN requirement. However, if you are a consultant charging for access, you can “lock” your direct messages behind a paywall/PIN.
- Privacy Seeker: For anyone tired of unwanted messages from strangers in group chats, this feature offers strong protection. You can share your username on Twitter or Instagram, but only give the PIN to people you actually want to communicate with.
Meta has not confirmed when this feature will officially launch, but the recent changes in the beta code suggest it is almost ready. Once this feature is available, WhatsApp will transform from a simple messaging app into a gated community. You will control access. If someone’s name isn’t on your list or they don’t have the PIN, they won’t be able to contact you.
