Digital technology has changed the way investigators approach visual ITC. Instead of relying on analogue televisions and camcorders, today's experiments tend to use modern devices such as smartphones, webcams and smart TVs. These offer bright, stable displays and high-resolution cameras, which behave very differently from the older equipment used in early ITC research.

This shift has advantages and drawbacks. Digital screens and sensors produce clean, consistent images with far less natural distortion, meaning the unpredictable visual noise of analogue setups is largely gone. At the same time, modern cameras capture subtle changes in light and movement with far greater sensitivity, creating new ways for feedback patterns to form when these devices are used in controlled looping setups.

Digital displays and high-resolution cameras offer a very clean, stable image, which is both an advantage and a drawback. Older analogue systems naturally created visual noise, distortion, and fluctuating patterns - exactly the kind of...