Nintendo Labo turned cardboard into controllers by borrowing the Joy-Con's senses

Nintendo Labo looked like an expensive box of cardboard, but the mechanism was sharper than that. The cardboard was not the electronics; it was a low-cost mechanical interface for sensors already sitting inside every Nintendo Switch Joy-Con.

Engadget's review points to Labo's real secret: it unlocked new uses for Switch hardware. The RC car moved with HD Rumble, larger kits used accelerometers and gyroscopes, and the right Joy-Con's infrared sensor tracked movement, gestures and distance. In the piano, the IR sensor read white stickers behind keys to know what was pressed.

TechRadar describes the same system from the user's side: cardboard Toy-Cons use white stickers placed precisely, plus Joy-Con motion controls, HD Rumble and the IR sensor, to affect what happens on screen. The result made assembly, play and discovery part of the same product instead of separate toy, manual and game.

Let cardboard be the mechanism

Nintendo used cheap material for what it does best: hinges, springs, levers, slots and visible mechanics.

The expensive sensing layer was reused from hardware customers already owned, keeping the new accessory simple.

The product taught its own mechanism, so users could move from following instructions to inventing in Toy-Con Garage.

A platform can unlock new products by exposing its hidden capabilities through cheap physical scaffolding.

Labo did not become a long-running blockbuster line, but it showed how Nintendo could turn hardware affordances into playful physical invention. Its ideas resurfaced in later Switch experiments that treat the controller as more than a set of buttons.