Mobile Payment Rule-Based Device Selection

The patent introduces a rule-based intermediary system that mediates between multiple pre-authorized devices and the payment terminal. When multiple devices are detected, the system applies pre-established rules (such as device priority, user proximity, or transaction type matching) to determine which device should authorize the transaction, preventing erroneous authorization while maintaining convenience of multiple pre-authorized devices.

The patent applies preliminary action by pre-establishing authorization rules between devices before the actual transaction occurs. Users can pre-configure which device should be used for specific scenarios (e.g., primary device for online payments, secondary device for in-store purchases). When a transaction occurs, the system simply applies these pre-set rules automatically, achieving fast processing without complex real-time decision-making logic.

The patent applies local quality by enabling presence detection and rule-based control only when necessary - specifically when multiple pre-authorized devices are detected in proximity to the payment terminal. Individual devices can maintain low-power states during normal operation, and full authorization control is activated locally only at the point of transaction when multiple devices are present, thus balancing control reliability with energy efficiency.