​• Reducing Cognitive Load: By grouping items into categories and using visual cues, the design minimizes the cognitive effort required to navigate the interface. Progressive disclosure principles are applied, showing detailed options only when necessary to prevent information overload.

• Error Prevention: Visual and organizational cues, such as color coding and pre-set default values, help prevent errors during the selection process. This reduces mistakes, especially in busy settings where employees must act quickly.

• Efficiency & Speed: The system is optimized for efficiency, minimizing clicks and providing quick access to frequently used functions. The expandable keyboard and automatic cash calculations further enhance speed, allowing employees to process transactions swiftly and accurately, crucial in fast-paced environments.

• Learnability for New Employees: The use of visual affordances (images, color coding)makes the system more intuitive, reducing the learning curve for new employees. This enhances overall usability and improves the employee experience.