Question: I set my Web browser to remember my bank user name and password, but it won’t type them in for me. Is something wrong with my browser?

Answer: this is a site-specific thing. The author of a Web
site can prevent visitors’ browsers from logging in automatically by adding
extra source code ("autocomplete=’off’ ") to a sign-in page.

When your browser reads these instructions, it will ignore any saved passwords;
you’ll have to type in that information yourself. There are ways to tweak browser
settings to bypass this restriction, but none of them are easy. For most people,
the only option is to complain to the site.

Many users will also react by using a simpler password — less secure, but
easier to remember. Or they may jot down the password on a Post-It note stuck
to the monitor. In this way, a measure meant to enhance security (by making
it impossible for a stranger to walk up to your computer and log into your bank
account) can wind up undermining it.

Source: Washington Post