Google is silently linking your phone number across all signed-in accounts

Your phone number now ties together all your Google accounts, impacting privacy and data consolidation.

Google is now linking phone numbers across all accounts a user is signed into. Previously, phone numbers could be linked to individual accounts for security or recovery purposes. This change means a single phone number can now tie together multiple Google accounts, even if they were created independently. The company has been making this change without explicit user notification. This cross-account linking applies to services like Gmail, YouTube, and Google Drive. The objective is to consolidate user identity and potentially streamline services and advertising across a user's various Google presences. The exact scope of how this data is used for advertising and other services is not fully detailed by Google.

This move by Google signals a significant step towards creating a more unified user profile across its vast ecosystem. By linking phone numbers, Google can more effectively track user activity and preferences across different accounts, which could lead to more personalized advertising and services. It also raises privacy concerns about the depth of data consolidation and the potential for a single point of compromise if a phone number is compromised. This strategy aligns with broader industry trends where companies are seeking to build more comprehensive customer profiles to enhance engagement and monetization.

For users, this means a less fragmented online identity with Google, but also a potential reduction in perceived anonymity between separate accounts. Businesses and advertisers may benefit from more granular targeting capabilities, while users might experience more relevant, but also more pervasive, ads and recommendations. The implications for data security are also notable, as a compromised phone number could potentially unlock access or information across multiple previously distinct Google services. Future developments will likely focus on how Google leverages this unified data and user responses to potential privacy trade-offs.