What is a common characteristic of infra-red heat touch screens compared to capacitive screens?

Infra-red heat touch screens rely on a grid of infrared light beams that create a detection field over the screen surface. When an object, like a finger, interrupts this light grid, the screen registers a touch. However, when used in direct sunlight, the outdoor light can interfere with the infrared sensors, which can lead to a decrease in visibility and responsiveness.

Capacitive screens, on the other hand, use a layer of capacitive material that detects the conductive properties of a finger. They generally perform better in sunlight because they are less affected by ambient light conditions. This characteristic makes it challenging for infra-red screens to maintain clarity and functionality in bright environments. Consequently, the choice illustrating worse visibility in sunlight is indeed the correct answer in this context.