Here's how you can download the Lie Detector Polygraph app free for Android devices.
1. Go to the Google Play page for the free app Lie Detector Polygraph.
2. Tap the Install button.
Here's a description of Lie Detector Polygraph:
"Try the new Polygraph Application!
This app detects based on capacitive touchscreens of your device changes in blood pressure, pulse, sweat production of the finger and finger temperature if someone is lying or telling the truth.
Just put your thumb on the impression scanner keep thinking/telling the truth and remove your thumb again."