POS Cradle With Interchangeable Frames for Mobile Device Compatibility

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Solution Overview

Problem

Existing payment processing systems struggle to intuitively and securely interface with a variety of mobile computing devices due to differences in form factors and sizes, leading to compatibility issues.

Innovation Solution

A point of sale (POS) terminal device with a nest portion and cradle portion that accommodates interchangeable frames to secure mobile computing devices of different sizes, combined with tamper detection circuitry and secure enclosure to ensure data integrity and security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed bracket or securing element is used for mobile computing devices, then compatibility with certain device form factors is achieved, but compatibility with other device sizes and form factors is lost

Engineering Contradiction:
Improvecompatibility with mobile computing devicesVSAvoidinterface structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The interface structure includes adjustable components that can be repositioned or reconfigured to accommodate different mobile computing device sizes and form factors. The bracket or securing element is designed with movable parts that allow dynamic adjustment rather than being fixed in a single position, enabling the same interface to work with multiple device types.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The interface structure is divided into modular segments that can be independently adjusted or reconfigured. This segmentation allows different parts of the interface to be optimized for specific device dimensions while maintaining overall compatibility across various form factors.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If manufacturers change device thickness, size, ports, or port locations between versions, then device evolution and improvement are achieved, but compatibility with existing interfaces is broken

Engineering Contradiction:
Improveinterface compatibilityVSAvoidform factor consistency
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The interface structure is designed with universal components that can serve multiple functions and accommodate various device configurations. The same basic interface structure can adapt to different port types, locations, and device dimensions through adjustable elements, making it universally compatible across device generations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The interface incorporates adjustable parameters such as movable brackets, repositionable securing elements, and flexible positioning mechanisms that can be configured to match different device thicknesses, sizes, and port locations, allowing the interface to adapt to parameter changes in mobile computing devices without requiring redesign.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If a secure enclosure with tamper detection circuitry is implemented, then data security is improved, but device complexity increases

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

Solution Approach 1:

The tamper detection circuitry is integrated directly into the enclosure structure itself, merging the security function with the structural components. This combination eliminates the need for separate, additional security devices and reduces overall system complexity while maintaining robust data security through the embedded detection capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4730185A2Point of sale device with cradle for mobile computing device
Publication Date: 2026.04.22 BLOCK INC
  • EP4730185A2 patent drawingFigure 1A
  • EP4730185A2 patent drawingFigure 1B
  • EP4730185A2 patent drawingFigure 2

AI summary

A point of sale (POS) device includes a nest portion and a cradle portion. The nest portion includes one or more payment card or near field communication (NFC) readers. The cradle portion couples to differently-sized interchangeable frames, which in turn help secure a mobile computing device to the cradle portion of the POS device. The mobile computing device is connected via a connector to the rest of the POS device. Payment card information read by the readers is conveyed to the mobile computing device over the connector for processing. The POS device may also include tamper detection circuitry.