What if you could unlock your front door — just by knocking it?
That's just one potential use of Knocki, among the latest devices drawing dollars on Kickstarter.
Knocki is a wall- or table-mounted, battery-operated device that allows users to do things like turn on a light by tapping anywhere on a wall rather than searching for the switch, or start the coffee machine in the morning by slamming the nightstand. After launching a crowdfunding campaign on Kickstarter on Tuesday, Knocki met its $35,000 funding goal within an hour and almost tripled it by the end of the day. Now, it's over $300,000.