When searching for solutions to cursor jumping around, I found a lot of references to touchfreeze - a package that disables touchpad while typing. Only it is no longer part of any repository that I can find. All links to it are invalid.
You do not need a separate application to achieve that.
to either disable or enable touchpad while typing.
You can use syndaemon in the background
To add syndaemon to startup applications:
Dash > Startup Applications > Add. Add the command:
The cleanest solution is to use:
However, the key does not exist in versions, later than 14.04. I tested
Syndaemon has a number op options, of which the following seem the most important to me in your situation:
See also man syndaemon
The package was removed after 10.04 (and 10.04 is no longer supported, which is why you can't find it in the repositories). From the publishing history on Launchpad:
The Debian bug report mentioned says:
Sp, perhaps you should look into this
The other answers are excellent, but I'd just like to note that in the "Touchpad" pane of the settings screen for "Mouse and Touchpad" in 15.10, there's a tickbox that says "disable touchpad while typing" and which does what it says on the tin.