Secure login script on Google Code - without mail form field?

Question

I need a login system on my site.
On this page, I found the "secure login scripts" - this is the header of the page.

But there is no:

• mail verification,
• mail field on the form (duplicate mails are allowed),
• limit for false login try,
• restriction for duplicates IP addresses.
• no captcha...

Could someone comment - is this script really secure ?

Answer 1

This is not the official google page. Google Code is something like GitHub - any developer can host his project there.

As for the script.. If you don't feel it's secure enough, why don't you make it secure then?