What is the mystery behind the Note 3 Coins Identifier APP?

I saw from YouTube that one can put coins on the screen and the phone will display the answer automatically. Any one know how to achieve it? Thanks!


Hi there,Create simple app which will display answers in order setup by you, memorize the order which you set up in your app and place coins in this specific order. You can use app APP Inventor to create that APP (If you not familiar with coding) which you should be able to master after passing tutorials found on its website