Two visualizations (among many others) from unknown authors.
This two-pages document is from a magazine called EPOCA:
A simple series with some design parameters presented with icons from 3oneseven:
The next one is made by Bogdan Răuţă for usell.com:
Why do I blog this? I recently started a project about smartphone gestures, a sort of follow-up to Curious Rituals. These representations (which are not perfect of course) are relevant for that matter, as they show how different parameters evolved over time.