1) Put your friend or victim's thumb for the test and wait 3-6 seconds
2) During that time ask the question you like, for example:
*Did you eat my chocolate?
*Do you like my girlfriend?
*Did you go out last night without me?
3) Once the scanning if finished the simulator will give the final veredict.
4) Included party mode that does not affect vision at night or evening meetings with friends
Lie detector Prank is a simulator, is not a real app, and it only works for joking with your friends.