Galvanic Skin Response or GSR is a physiological effect used in Biofeedback and Lie Detectors. I've developed an Android App that turns a smartphone into a GSR sensor. However, it requires making special finger electrodes to use. This video shows the process of making them from an Audio/Video cable and some Velcro. More information about Galvanic Skin Response and the program can be found on my website: http://www.extremenxt.com/gsr.htm .
Step 1: All of the Instructions Are in This YouTube Video.
The cable used in the video is a Philmore 42-3546.