https://doniyor.com/tags/security/Recent content in Security on Doniyor UlmasovHugoen-USFri, 29 Jan 2016 15:39:18 +0000https://doniyor.com/article/image-based-captcha/Fri, 29 Jan 2016 15:39:18 +0000https://doniyor.com/article/image-based-captcha/<img class="center" src="https://doniyor.com/svg/picaptcha.svg" alt="piCAPTCHA project illustration"> <p>My final year project at University of Sussex was inspired by the frustrations encountered with traditional CAPTCHA systems, especially on mobile devices such as tablets and smartphones. My approach to coming up to an alternative system was with primary objective of not only defeating bots, but also to produce a more pleasant user experience.</p> <p>piCAPTCHA uses images and gestures to prevent bots from performing activities which are intended for human users only. The system provides user with a contextual task which the user has to complete in order to be able to proceed with their activities on the website. For example, given an image of a street the user can be asked to draw a line between the light stop and a car.</p>