Body voting 101
The creative folks at Kinetech Arts in San Francisco published this delightful illustration of body voting, inspired by a short presentation I gave at their weekly media lab on August 4, 2015.
One-dimensional human spectrograms like these are just the tip of the iceberg. There are many great variants—including two-dimensional and state-change versions—that you can use to quickly and enjoyably explore all kinds of useful information about a group. Read Chapter 33 of my book The Power of Participation for the complete what, why, when, and how of this powerful public voting participative technique.