To lock WhatsApp on Android, launch the app, tap the three-dot menu, navigate to Settings > Privacy > App Lock, and turn on "Unlock With Biometric." To lock WhatsApp ...

WhatsApp is an end-to-end encrypted chat app, but those conversations can't be protected if someone gains access to your phone or if you don't lock the app with a password. That's where the Chat Lock ...

Chat Lock lets you choose chats to lock with a password (like your phone's lock screen). Even if someone logs in to WhatsApp Web on that computer, they won't be able to see your locked chats. This is ...

WhatsApp is working on adding a new security feature to its web client, focusing on improving the privacy of chats that are locked. This upcoming feature, known as the secret code feature, is designed ...