Captcha For Login Page

[jafariebi]

Is there a way to add captcha to the login page?
The index.php file is very crowded and large, and customization is not easy.
(Of course, I understand that it is done this way to avoid interference with other host files)
Thank you for answering the question about captcha.
With respect

[hestiacn]

There is no need to use verification codes. The account number and password are set by the administrator. What's the point of setting a verification code?