Re:Headphone jack sensor? (Score 1)

..... Magnetically attached power cords that don't rip your laptop off a table when your cat/kid/own clumsy self trips over the cable, for example.

But it took a good 25 years or so from the first laptops for someone to think of it.

Really this has been in use for many many years before Laptops had them, they have been in use in Asia for various cooking appliances to stop people scaling themselves if they catch the cable.