A caccia di bot che risolvono CAPTCHA

Today, smart phones have become an integral part of modern human life. By increasing CPU power and energy efficiency of these types of equipment, almost all daily routines and even personal activities of people have become dependent on these devices. By knowing the importance of these equipment in today's human life and crucial role of them to protect personal sensitive information, security and authorized access to these data are indispensable requirement in any new methods in this field of study. Today, CAPTCHAs are used to protect smart phones and computers from robot access, however most of which are broken and hacked by robots and machine learning based method. Therefore, it is necessary to provide more accurate and comprehensive algorithm in order to identify robots and prevent them from entering mobile phones.