Yeah, a poker‑chip sensor that reads micro‑blinks and tremors. Picture a 10 mm square, battery‑less, powered by the chip’s motion. Tiny MEMS accelerometers track hand sway, a micro‑photodiode catches a blink flicker, and a micro‑processor runs a bluff‑score algorithm. It blinks red when the data looks suspicious and stays silent otherwise. Works in the dark, no wires, just a discreet flash on the table. I’d keep the firmware as lean as possible—no unnecessary features, just the one thing: “Don’t trust the player, trust the data.”

Yeah, calibration is key—maybe a quick swipe over a card to set the baseline lighting. If we keep the flash under three microseconds, the only thing anyone will notice is the glow of a confident win. Just don’t let the chip start waving like a magician’s wand.

You got it—just a quick swipe, a steady base, and the chip’s blinking like a tiny, silent hawk. If it can keep its nose on the data and stay out of the glare, the whole table’s a whisper in your ear. No fuss, just facts.