Fat-finger

Another Sprint employee speculated that someone might have fatfingered the keyboard.

However the other day I fatfingered a web request and got a Charter Communications not found result page

“Evidently, someone said they ‘fat-fingered’ a trade, meaning they accidentally put it in for billions instead of millions,” Snyder said.

In general, mobile form designs are "chunkier," using larger input boxes to make it easier to tap in the intended field, even if the user "fat-fingers" it. So make sure to add some extra padding to all your input fields, and also increase the font size a bit so it's not only more legible but also larger on the touchscreen.

Slowing down the number of login attempts before an IP address is blocked reduces the attractiveness of your site to an automatic attack script. Note that generally these offer temporary IP address blocking, so that valid users who accidentally fat finger their password have an opportunity to log in after the ban has expired.