The future of privacy: A guide for companies to adopt WhatsApp "usernames" in 2026

2026 will witness a radical transformation in the WhatsApp ecosystem with the launch of "usernames," a strategic move to enhance user privacy by replacing phone numbers with unique identifiers. This change requires businesses to respond immediately with technology to ensure business continuity.

Developers and partners must adopt the Business Domain User ID (BSUID) and update their webhooks to support the new user_id field. The primary challenge lies in configuring CRM systems to handle dual identity (phone number and BSUID) and accurately link it to existing customer records to avoid losing context or disrupting billing and campaign systems.

Usernames offer direct searchability, making it easier for customers to find a brand compared to traditional display names. Therefore, it's essential to update chatbot software to request phone numbers when needed, while ensuring compliance with WhatsApp's new data privacy standards.