POS Cash Drawer Access Control via Network Node Authentication
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Solution Overview
Problem
Existing POS devices face significant security risks due to network access allowing unauthorized users to access the cash drawer, which is a critical and sensitive function.
Innovation Solution
Implementing a system where a first network node, connected to the POS device via a one-to-one connection, manages access to the cash drawer by authenticating authorized network nodes based on predefined lists, ensuring only authorized devices can perform secured functions like accessing the cash drawer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If network access is enabled for the POS printer, then ease of operation is improved, but security is worsened due to potential unauthorized access
Solution Approach 1:
The patent segments the POS device functions into secured and unsecured portions. The cash drawer access is separated as a secured function requiring authentication, while the printer remains accessible for unsecured operations. This segmentation allows network access for printing while preventing unauthorized cash drawer access through function separation and selective authentication requirements.
2Object-affected harmful factors
If authentication mechanism is implemented for cash drawer access, then security is improved, but device complexity increases
Solution Approach 1:
The authentication mechanism is designed to serve multiple functions: it authenticates users attempting to access the cash drawer, tracks authentication attempts for security monitoring, and provides a unified security layer for the secured portion of the POS device. This multi-functionality reduces the need for separate complex authentication systems for each function.
Solution Approach 2:
The patent introduces an intermediary authentication mechanism that sits between the network/terminal and the cash drawer. This intermediary handles all authentication logic centrally, simplifying the overall system architecture by consolidating security functions in a single layer rather than distributing complex authentication throughout the system.
3Object-affected harmful factors
If restricted command list is implemented, then security is improved, but ease of operation worsens for authorized users
Solution Approach 1:
The patent applies local quality by differentiating access rights at the function level. The cash drawer access is marked as secured and requires authentication, while other POS functions like printing remain unsecured and accessible without authentication. This localized security approach ensures that restrictions are applied only where necessary, maintaining ease of operation for authorized functions while preventing unauthorized access to sensitive areas.
Data Source
AI summary
Systems and methods of controlling a point of sale (POS) device are provided. In one exemplary embodiment, a method comprises, by a first network node that is operationally coupled to a POS device over a one-to-one connection, with the POS device being operable to receive commands related to secured and unsecured functions of the POS device that are sent to the first network node over the network and then conditionally sent by the first network node to the POS device over the one-to-one connection, receiving, from the second network node, an indication that includes both a command related to the POS device and a network node identifier associated with the second network node so that the first network node is enabled to authorize the second network node to send the command to the POS device based on the network node identifier and an authorized network node identifier.