The Design And Implementation Of Handwritten Password System

Handwritten password system is an application system to bg on by user name and password, handwritten password recognition demands a high degree of accuracy. Handwritten signature verification is a multidisciplinary research field, involving many discipline knowledge of computer, signal processing, pattern recognition, neurophysiology knowledge.After decades of development, the password authentication has acquired a large number of research results, which respectively from different perspectives of template matching, neural network, and statistical analysis to improve the handwritten character recognition method. Android gesture recognition uses the template matching technique. Handwritten password system in this paper uses support vector machine gesture recognition technology to improve the handwritten character recognition performance.With the popularity of the Internet, various network services has become a part of people’s daily life, such as free email service, online voting and recommendation system, Internet chat rooms and so on. Some malicious computer programs often, take up service resources, produce a large number of network rubbish, affect user’s network experience, pose a great threat to the network service security. Automatic open man-machine distinguish Turing test CAPTCHA emerging as the times require is a mechanism to solve the problem of network security, which is often referred to as the "code" technology.This paper describes the design and implementation of handwritten password system on android platform, using CAPTCHA image verification code to improve system security. Handwritten password system consists of four modules:password registration, handwritten password, CAPTCHA verification code, password modification. If the password template library is empty, select the Button control and jump to the password registration page. Otherwise input the handwritten password. If the password is similar to the gesture in sdcard file, go to the next step, namely the verification code selection. The page randomly display a picture. Select available options in the drop-down list. If consistent with the picture, jump to the next page, namely the login page. Select the Button control and jump to the handwritten password modification page. Enter the name and handwritten password to modify. Experimental results show the robustness of the system, and puts forward the further work.