An electric can opener is a nice alternative for the manual one and is very helpful for the elderly, or who have any disabilities that make opening cans a difficult job
WIth these Start Button, you can fully open your jar by holding the Start button for a while.
360° walks around the can and switches off automatically. And the lid is fixed by the magnet so there is no soiling.
A smooth edge will not hurt your hands. The blade is set angled to cut Regular cans below the rim;