Android IDAnchor is a Customer Identity Protection (CIP) solution that delivers a persistent, tamper-proof Mobile Device ID for Android apps by binding each session to a trusted Android environment. Using immutable signals from the Android OS, device hardware, app install, app release, and DevOps workspace, it creates a stable identity that remains consistent across reinstalls, factory resets, and app updates. This helps stop fraud tactics like synthetic device creation, emulator-based attacks, promo abuse, and credential reuse. Android IDAnchor enables mobile developers to detect identity anomalies even in clean sessions, and supports compliance goals such as FFIEC and PSD2 without requiring PII.