Stylin'
Very often I find myself helping people who have issues with stability, tremors, skin elasticity and conductivity or vision difficulties that impair their ability to use touchscreen devices leading to mistouches, phantom touches, accidental swipes and more.
If any of that sounds familiar to you give a stylus a try. A stylus is a little pen type tool with a squishy rubbery point on it. With a stylus you'll find you have better control and more precision.
A stylus can be picked up just about anywhere and are very often given away for free as promotional items. You may already have one or two pens with stylus tips in the junk drawer.
Give it a shot. You may find using your tablet or phone much more enjoyable with one.