Fingerprint Identification Device Conflict Resolution

The patent implements dynamic occupation status management for the fingerprint identification device. The system continuously monitors which application occupies the device and allows dynamic switching between applications based on foreground/background state. When an application transitions to foreground, it can acquire occupation of the device; when moving to background, it releases occupation. This dynamic approach resolves the contradiction by making the occupation state flexible rather than fixed, allowing the device to serve different applications at different times while maintaining security during active use.

The patent introduces an intermediary mechanism (the occupation status management system) that mediates between multiple applications competing for the fingerprint identification device. This intermediary tracks occupation status and controls access, allowing legitimate switching between applications while preventing unauthorized access during occupation. The intermediary resolves the contradiction by providing controlled access that maintains security for the occupying application while enabling accessibility for applications that need to legitimately use the device.

The patent implements preliminary action by having applications declare their intent to use the fingerprint identification device in advance through occupation requests. The system processes these requests beforehand and establishes occupation status before actual fingerprint authentication is needed. This preliminary occupation declaration allows the system to prepare for legitimate access while maintaining security, resolving the contradiction by distinguishing between applications that have legitimately declared intent versus those attempting unauthorized access.

The patent implements feedback mechanisms where the system continuously monitors application states (foreground/background transitions) and provides feedback by updating occupation status accordingly. When an application moves to foreground, the system feedbacks by granting occupation; when moving to background, it feedbacks by revoking occupation. This feedback loop maintains security while ensuring smooth operation for legitimate use cases, as the system automatically adapts to user behavior patterns.