Intelligent ABC Vulnerability Use and Supplementary Description] General Internet cafes will have a management software, in the boot state, there is a dialog box in the middle of the screen, you want to enter the member account and password, tune the input method into smart ABC, then make a V key, Press the direction button, then the delete key, click, return to the car, the system will have an error message, and then the Internet cafe management software will cost it, bamboo, such a post will not be sent, I I am afraid in my heart. . . [The above article came to HackerxFiles] After reading this article, I tried it with a note. Sure enough, considering the keyboard of some Internet cafes may probably or the V button is unavailable. I will try it again. Try other key issues as long as one of the letters and press the arrow keys "" or "←" and press the "delete" button, then press the Enter key and press 2 "Back Space" button to achieve the purpose but also in version 5.22 Under the test, this method does not work, so this is only valid for the previous version of 5.22.