An idea for an important security update for smartphones and tablets

When typing a password on a smartphone for example, every last typed letter and or number and or character is visable.

And this is a problem. It's a vulnerability.
And there are even hack tools, script programs with which you can view
everything on the screen and then you can get peoples passwords.

So it's important that there are only dots. And offcourse also only dots when typing.

By Jef Koelewijn