a graphical information-correcting code identification procedures, similar to many websites on the functional verification code, test code can be specified types of information, such as case-sensitive English, figures, random mixing, can specify validation code length, designated background pictures, is the strongest of bending like GG irregular words, a word is a good demonstration program, remember that someone had asked me, this is not to find out after the fat.

基于1个网页-相关网页