Lie Detector Party Game Prank makes out to simulate a "blood pressure, heart rate, sweat production, body temperature and fingerprint scanner" analyzer to determine whether the subject is lying or not. When you press your finger on the button, what it actually does is spit back a random Truth/Lie response - unless you toggle the volume button during the scan. An up will result in Truth and a down in Lie, every time. In this way you can rig the app to work in your favor.
The coolest thing about this application over the others is that you can set a response to whatever you want, or leave the application to display a random answer.
Put your finger on the scanner and let the scanner begin.
Now, how do you tell the application to respond with TRUTH or LIE?
Simple. Click Volume UP (for TRUTH) or Volume Down (for LIE), any time between the start of the scan and the end of the Analyzer. If you don't click the volume key the application will display a RANDOM response.
Use it at parties to fool your friends or at home to catch your kids when they lie. Lie Detector Party Prank is a goofy little prank app that's good for a laugh or two.
**** Disclaimer ****
This is not a real fingerprint scanner or lie detector (polygraph), this is just a simulator.