Off-line verification system and method for preventing double consumption of electronic water tickets

By introducing pre-synchronization and asynchronous synchronization mechanisms into the bottled water delivery system, combined with Bloom filters and the UDP/QUIC protocol, rapid electronic water ticket verification was achieved in a network-free environment, preventing double consumption, improving delivery efficiency and user experience, and protecting the interests of merchants.

CN122367461APending Publication Date: 2026-07-10CHENGDU JIKEDAO SOFTWARE SALES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU JIKEDAO SOFTWARE SALES CO LTD
Filing Date
2026-04-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing technologies, electronic water tickets for bottled water delivery cannot be effectively verified in areas without network coverage, allowing malicious users to make double purchases. Furthermore, offline verification technology for purely digital electronic vouchers is not applicable to two-way asset exchange scenarios, making it difficult to prevent fraudulent activities.

Method used

The system employs a pre-synchronization submodule, a Bloom filter, a local initial screening and verification submodule, a ticket bin fusion and rights confirmation submodule, and an asynchronous synchronization and low-network high-speed communication submodule on the delivery end, combined with the UDP/QUIC protocol, to achieve offline verification and rapid reconciliation in low-network environments.

Benefits of technology

It improves delivery efficiency and user experience, prevents double-spending, protects merchants' interests, saves terminal storage space and synchronization traffic, and solves the problems of data backlog and status disorder in weak network environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses an offline verification system and method to prevent double consumption of electronic water tickets, belonging to e-commerce and mobile payment technology. The system includes a user terminal, a delivery terminal, and a server terminal. The pre-synchronization submodule, in a network-connected environment, requests and downloads a set of all unredeemed electronic water ticket IDs within the delivery area or the area the delivery person is bound to for the day from the server. The local initial screening and verification submodule verifies whether the scanned electronic water ticket IDs belong to the unredeemed electronic water ticket ID set using a Bloom filter, and then records the electronic water ticket IDs that have been redeemed during the offline period using a cache table. Delivery personnel do not need to wait for network timeouts in blind spots; offline verification results are obtained in milliseconds, significantly improving delivery efficiency and user experience. Simultaneously, by utilizing the underlying UDP and 0-RTT mechanism, the system completely solves the problem of data backlog and state corruption caused by TCP handshake failure when the delivery person exits the basement elevator.
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