I helped two students from the NTU (Nanyang Technological University) faculty of Art, Design and Media (ADM) for their Final Year Projects, presented at their graduation show. They are Visual Communication designers and needed help for touch interactivity for their exhibits.
I used capacitive touch sensing for both projects, using the Bare Conductive Touch Board for one installation and a custom made Arduino with an MPR121 shield for the other. Interestingly, the Touch Board also uses the MPR121 chip.
Disclaimer: The students are the owners and originators for the installations. I only helped out with the electronics. All copyrights and attributions goes to them. This article is produced with their permission.