1. A method for generating a human likeness score based on a Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), the method comprising: selecting a visual advertising asset; generating the CAPTCHA comprising a graphical interface, the visual advertising asset and a graphical object depicted within the graphical interface; from a user, receiving an input within the graphical interface, the input defining selection of the graphical object within the graphical interface; extracting a motion pattern from the input; comparing the motion pattern to a motion model based on input patterns of previous users; and calculating the human likeness score of the user based on the comparison of the motion pattern to the motion model, the human likeness score lying within a continuum of discrete human likeness scores.