[2] Touch is incredibly important to human communication and learning, but increasingly, most of the content people interact with is purely visual.
Something as simple as having toys (like the fidget spinner) in the workplace, or using physical props to teach children in schools, can have significant impacts on productivity and information retention according to the multisensory learning theory.
[3][better source needed] At the simplest level, a physical trigger that can be used to create a technological reaction is nothing new: it can be as basic as a button or switch.
More modern versions of buttons include conductive paint[4] and projectors - both are tools that can make a non-digital surface act like a touchscreen, turning anything from tables to sculptures into interactive displays.
Games are an example of a field that transformed from entirely tactile to largely digital, and where the trend is now turning back to a more multi-sensory experience.