Lie Test Prank is a funny game which simulates to detect whether you are telling the truth or lying. You can preset the result to prank your friends! Press the volume key while scanning. (volume+ for truth, volume- for lie). Let your friends press his finger on the fingerprint scanner and then the Lie detector app will simulate to scan and calculate the result, true or false. Of course it is a simulated app used to prank your friends. The lie detector simulator is so interesting that your frien