WhatsApp introduces chat lock feature on linked devices for enhanced privacy and security.

WhatsApp has introduced a chat lock feature on linked devices, enhancing user privacy and security. The new Android beta version 2.24.11.9 tests the feature with selected users, enabling chats locked on the primary device to be automatically locked on any associated devices. The feature adds an extra layer of security on top of device biometrics, protecting users' conversations from unauthorized access.