Photo Printing Security Via Server-Mediated User Connections

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Solution Overview

Problem

Existing printing systems in self-service areas, such as drugstores, are vulnerable to data manipulation during the printing process, particularly when users' personal information is transmitted to unauthorized systems, compromising security.

Innovation Solution

A system is implemented where user devices first connect to a server system, which then establishes a connection to a task system, ensuring that direct communication between the user device and the task system is mediated through the server, using encrypted data connections and QR codes or other secure links to enhance security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a direct data connection is established between the user device and the task system, then the printing process is simple and fast, but data security and manipulation resistance deteriorate

Engineering Contradiction:
Improvedata securityVSAvoidconnection structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a server system as an intermediary component between the user device and the task system. The server system receives task messages from the printing device, establishes data connections with both the user device and task system, and mediates all communications. This intermediary structure prevents direct connections that could be manipulated while maintaining secure data transmission channels.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the printing device directly connects to the task system, then the system response time is reduced, but the risk of unauthorized data transmission increases

Engineering Contradiction:
Improvemanipulation resistanceVSAvoidconnection establishment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The server system establishes data connections with both the user device and task system in advance before the actual printing task begins. This preliminary connection establishment ensures that secure communication channels are ready when needed, reducing the time required for task execution while maintaining manipulation resistance through pre-configured secure pathways.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If personal data is transmitted directly to the task system, then data transmission is efficient, but the risk of data manipulation and unauthorized access increases

Engineering Contradiction:
Improvedata transmission efficiencyVSAvoiddata manipulation risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The server system acts as a secure intermediary that receives personal data from the user device and transmits it to the task system through controlled, monitored channels. This intermediary structure maintains data transmission efficiency while preventing unauthorized access and manipulation, as the server system controls all data flow paths and can validate authentication credentials.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4592818A1System for printing printed objects, in particular photos
Publication Date: 2025.07.30 CEWE STIFTUNG & CO
  • EP4592818A1 patent drawingFigure 1
  • EP4592818A1 patent drawingFigure 2
  • EP4592818A1 patent drawingFigure 3

AI summary

The invention relates to a system for printing printed objects, in particular photos, using a printing device 4, for example, a photo station. The printing device 4 transmits a task message specifying a desired task to a server system 9, which returns a link for connecting a user device 3, which is, for example, a smartphone, to the server system 9. The first link is transmitted from the printing device 4 to the user device 3, after which a data connection is established between the user device 3 and the server system using the first link. After this data connection has been established, the server system initiates the establishment of a data connection between the user device 3 and a task system 23. After this data connection has been established, the user-interactive task is executed by the task system 23, wherein the user device 3 is used for the interaction with the user.The print objects are finally printed by the printing device 4 depending on the result of the execution of the user-interactive task.