AccLock: Unlocking Identity with Heartbeat Using In-Ear Accelerometers

ArXi:2605.11901v1 Announce Type: cross The widespread use of earphones has enabled various sensing applications, including activity recognition, health monitoring, and context-aware computing. Among these, earbased user authentication has become a key technique by leveraging unique biometric features. However, existing earbased authentication systems face key limitations: they either require explicit user interaction or active speaker output, or suffer from poor accessibility and vulnerability to environmental noise, which hinders large-scale deployment.