「TouchKeys Multi-Touch Musical Keyboard by Andrew McPherson − Kickstarter」 http://kck.st/14uD8Iw
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o XY position sensing on every key (Y-axis only on the back of white keys, between the black keys) o White keys: 2432-point resolution in Y axis; 256-point resolution in X axis o Black keys: 1536-point resolution in Y axis; 256-point resolution in X axis o Contact area sensing (256-point resolution, with minimum size threshold) o Up to 3 touches per key (independent Y values; shared X value) o 200Hz scan rate per key (and little to no perceivable latency) o USB 2.0 full-speed connection, bus powered (mini-USB connector) o Any size set from 25 to 97 keys o 0.8mm thick sensors, plus 0.8mm thick adhesive backing