Mood Scanner is a light-hearted prank app designed to entertain users by scanning their mood through a fingerprint sensor. With a simple thumb placement on the sensor, the app claims to analyze feelings and display over 50 different moods and emotions with various emoticons for both genders. Users can even share their "mood score" via email or SMS, adding a social element to the fun.

It's important to note that Mood Scanner is meant for amusement purposes only, with the disclaimer that all scores are randomly generated. Despite its playful nature, the app promises a success rate of around 60%-70% in detecting moods, making it an enjoyable pastime for users seeking some light-hearted entertainment.