Dynamic Touch Selector Positioning for Height-Based Kiosk Usability
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Solution Overview
Problem
Touch screens on standing mode kiosks are not height-adjustable, making it difficult for users of varying heights to accurately select features below eye level due to the need to touch the screen orthogonally, leading to unintended selections or failure to select features at all, with current technologies offering no adequate solutions.
Innovation Solution
A device with a processor and touch-enabled display that identifies user height, adjusts the location and size of selectors and sensitivity areas based on user height, using camera input and calibration processes to ensure accurate selection, and optionally adjusts the display's prisms to compensate for angular distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch screen is fixed at a standard height, then the device structure is simple and manufacturing is easy, but taller users cannot accurately select features below eye level due to angular viewing distortion
Solution Approach 1:
The display presents selectors and sensitivity areas at dynamically adjusted locations based on the detected user height. The system transitions from a static display configuration to a dynamic one where selector positions and touch sensitivity zones are automatically recalibrated for each user, eliminating the need for manual height adjustment mechanisms while maintaining selection accuracy.
Solution Approach 2:
The system changes the parameters of the display presentation by adjusting the vertical position of selectors and the vertical extent of sensitivity areas based on user height measurements. This parameter adjustment compensates for angular viewing distortion, allowing users of different heights to accurately select features without requiring physical display repositioning.
2Ease of operation
If the selector location is adjusted for taller users, then selection accuracy improves, but the location of selectors changes from the default position
Solution Approach 1:
The system implements dynamic selector positioning that adapts to each user's height. Selectors are presented at adjusted vertical locations and sensitivity areas are recalibrated accordingly, allowing the interface to automatically optimize for each user without requiring manual intervention or compromising the underlying manufacturing precision of the display hardware.
3Ease of operation
If the touch sensitivity area is enlarged for taller users, then selection accuracy improves, but the default touch area configuration is altered
Solution Approach 1:
The system dynamically adjusts the vertical extent parameter of touch sensitivity areas based on user height. For taller users, the sensitivity areas are extended upward to compensate for angular viewing distortion, while maintaining the horizontal positioning and other characteristics. This parameter adjustment ensures accurate touch recognition without requiring physical recalibration of the touch sensor hardware.
Data Source
AI summary
In one aspect, a device may include at least one processor, a touch-enabled display accessible to the at least one processor, and storage accessible to the at least one processor. The storage may include instructions executable by the at least one processor to identify a height of a user. Then, based on the height of the user, the instructions may be executable to one or more of determine a first location of the touch-enabled display at which to present a selector and then present the selector at the first location, and/or determine a second location of the touch-enabled display to use as an area at which touch input that is received will correspond to selection of the selector and then undertake an action associated with selection of the selector responsive to receipt of touch input to the area.