Multi-Sensor BLE Authentication for Accurate Touchless Access

The patent combines multiple sensing modalities (BLE radio, optical sensors, LiDAR, radar) into a unified authentication system. By merging these different technologies, the system achieves both automated authentication and high measurement precision, overcoming the limitations of using BLE signal strength alone.

The patent introduces optical sensors and LiDAR as intermediary technologies to mediate the distance measurement process. These intermediaries provide accurate proximity detection without relying on the unreliable BLE signal strength, thereby enabling automated authentication with high precision.

The patent makes the sensor system multi-functional by having each sensor serve multiple purposes. For example, the optical sensors not only detect proximity but also help determine device orientation and prevent spoofing. This universality allows the system to achieve high authentication accuracy without proportionally increasing complexity.

The patent segments the authentication process into multiple independent detection stages, each handled by specific sensors. This segmentation allows the system to manage complexity by dividing the overall function into manageable parts while maintaining high overall accuracy.

The patent performs preliminary detection of user proximity and device orientation before initiating authentication. By detecting these conditions in advance, the system can automatically trigger secure authentication without requiring explicit user actions, thus maintaining both security and ease of operation.

The patent implements feedback mechanisms where the system continuously monitors sensor data and adjusts authentication behavior accordingly. This feedback loop enables the system to maintain high security while automatically adapting to user actions, reducing the need for manual intervention.