We created a proof-of-concept system seen in Figure 1 and
schematically described in Figure 3. To capture and classify
impedance profiles among a small set of users, we employ
Swept Frequency Capacitive Sensing (SFCS), introduced as
Touché [26]. Beyond the Touché sensor board, our system
consists of a 6.7” LCD panel, a 6.4” IR touch screen, and
an Indium Tin Oxide (ITO) coated transparent plastic sheet.