Galvanic Skin Response Kit
Our Galvanic Skin Response Kit (aka Truth Meter Kit) from the Maker Shed has everything you need to build the Truth Meter circuit featured in Make Volume 26. See what happens when someone asks you questions or when you laugh or get surprised. Everyone responds a little differently. Try it on your friends, acquaintances, or adversaries. It’s a great way to get to know someone! We even included extra resistors so you can calibrate the circuit and experiment with different sensitivities.

There is an excellent The Truth Meter build in Make: Projects!