WhatsApp is introducing a feature that allows users to communicate without sharing their phone numbers by creating unique usernames. This feature aims to enhance privacy and security, enabling users to connect solely by exchanging usernames. Users will receive notifications when the feature becomes available in their countries, and creators, small businesses, and organizations can claim usernames they use on other Meta platforms. Usernames will be limited to 35 characters, and high-profile individuals will not be able to register their names. Despite these changes, experts express concerns about WhatsApp's overall privacy practices, as the platform collects extensive metadata for marketing purposes. Users' phone numbers will still be required to create an account, and there will be no public username directory. Kunal Shah has been appointed as the new head of WhatsApp, succeeding Will Cathcart.