Tree-mounted machines let anyone knock on wood from anywhere in the world

Tree-mounted machines connect to web app to let users knock on wood remotely

Tree-mounted machines let anyone knock on wood from anywhere in the world

Knock On Wood is an internet-connected device that performs the familiar gesture of knocking on wood, letting users follow the superstition remotely when no wood is nearby. Through a web app, a digital button triggers a physical knocker strapped to a tree in real time. Each machine talks to a central server, so someone in a Tokyo café can set off a knocker in New York's Central Park. It's part of the series Machines Responding to Superstitions by designers Shashwath Santosh and Nithin Eluvathingal.

Through a web app, users press a digital button to trigger a physical device that knocks on wood in real time.
  1. jtickle

    This seems exactly like the sort of shenanigan that would piss off rather than appease the wood spirits.

  2. nkmnz

    What’s next? Touch-grass-as-a-Service?

  3. weirdish

    I'd only buy this if it included a subscription-based AI upsell to predict and adapt to my adjusting superstition needs over time

  4. yetihehe

    Knocking on wood was about knocking on unpainted wood, so that you have actual direct physical contact with wood. Remote knocking seems to go in the other direction...

  5. krunck

    There are societies where rather than knocking on wood one turns one's head and spits. For example: "Grandad is looking well after his fall, let's hope that doesn't happen again. Ptew!"

    Looking for this in app form.

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2026-10-30