Group Digital Wallet for Splitting Group Purchase Bills

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing payment systems face difficulties in tracking and managing purchases made by multiple customers in a group setting, especially when they are not seated together, leading to challenges in creating a single bill and splitting costs fairly.

Innovation Solution

A digital wallet system that allows customers to create a group tab associated with a social gathering, linked to a financial account, where images of group members are used for authentication, enabling seamless tracking and splitting of purchases across multiple devices, and facilitating a single payment or reimbursement among members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single bill is provided for a group of customers, then payment processing is simplified, but tracking purchases when customers move around becomes difficult

Engineering Contradiction:
Improvepayment processingVSAvoidpurchase tracking
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent introduces a digital wallet system as an intermediary between customers and merchants. The system uses mobile devices to track purchases, associate them with group members through images, and maintain a running tab. This intermediary solution resolves the contradiction by enabling both accurate purchase tracking and simplified single-payment processing without requiring customers to remain seated together.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If individual purchases are tracked for each customer, then purchase accuracy is improved, but creating a single group bill becomes complex

Engineering Contradiction:
Improvepurchase tracking accuracyVSAvoidbill creation system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges individual purchase tracking with group bill creation through a centralized digital wallet system. The system automatically aggregates purchases from multiple customers, associates them with group members using image recognition, and generates a single consolidated bill. This eliminates the complexity of manual bill creation while maintaining accurate tracking of individual purchases.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If group purchases are consolidated into one bill, then payment simplicity is improved, but fair cost distribution among members becomes difficult

Engineering Contradiction:
Improvepayment simplicityVSAvoidindividual cost tracking
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent segments the group bill into individual portions attributable to each group member. The system tracks which purchases were made by which member, calculates individual costs, and enables flexible splitting options (equal division, proportional to consumption, or custom allocation). This segmentation allows both simplified consolidated payment and fair individual cost distribution.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10242351B1Digital wallet for groups
Publication Date: 2019.03.26 BLOCK INC
  • US10242351B1 patent drawing
  • US10242351B1 patent drawing
  • US10242351B1 patent drawing

AI summary

Methods, systems, and computer program products for a digital wallet for a group of people. A group of customers may gather for an event, e.g., a party, in which each person in the group may purchase goods or services on behalf of the group from a merchant. A customer device executing a digital wallet application program acts like a wallet for the entire group. The customer device creates group tab. The customer device associates images of each person in the group to the group tab, and submits information on the group, including the images, to a merchant device operated by the merchant. The merchant device opens the group tab for managing purchases related to the group. At the end of the event, upon receiving an input to close the tab, the customer device can receive a single bill including a total amount, and divide the total amount among people in the group.