Hi ShirleyJUMPING LAPTOP MOUSE CURSOR
This is a problem that affects certain laptops. The sensitivity of the touchpad is the cause of the problem. As you type, your wrists and the lower part of the palm of your hands either brush or pass very close to the touchpad, activating it and causing the cursor to jump. Static electricity building up in the typist's body and passing to the touchpad can also contribute to this effect.
The solution, if the problem is very bad with your laptop, is to use a comfortable Wrist Rest that raises the palm and wrist high enough so that typing is possible and comfortable but unintended contact with the touchpad is avoided. See an example below.I hope this helps. If this Answer goes some way towards helping to resolve
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GEL-FILLED WRIST REST