The Truth Meter, a project featured in MAKE Volume 26, measures small increases in sweat which indicate nervousness and other stimuli. So if you’re sleuthing to find out who left the empty milk carton in the refrigerator and your prime suspect does nothing but deny accusations, watch this video and create your own Truth Meter.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…