How 67 Speed Tracks Your Hands

The core idea

Twenty seconds. Pump your hands as fast as you can. The camera watches, counts every rep, and gives you one score at the end. That’s the whole game.

Step 1 — The camera turns on

When you press play, your front camera opens and you show up on screen. The picture is mirrored like a bathroom mirror — your left hand stays on the left — so moving along with it feels natural.

Step 2 — The game finds your hands

As soon as you’re in frame, 67 Speed locks onto your wrists. It doesn’t care whether your hand is a fist, a flat palm, or pointed at the lens. It figures out where your wrists are from your whole body, so hand shape never trips it up.

That’s why 67 Speed feels fair and other 67 games don’t. Most of them try to track fingers, which breaks the instant you close your hand or turn it. Tracking the wrist just works.

Step 3 — Every pump counts

Each hand is tracked on its own. Every time a hand moves far enough up or down, that’s one point. Both hands feed into the same total, so fast two-handed pumping is how you actually rack up a score — pumping one hand like crazy just leaves the other idle.

The threshold is tuned so a real pump always registers but a small twitch or camera wobble doesn’t. You have to actually move.

Step 4 — Twenty seconds, then your score

A three-second countdown, then the clock starts. The timer runs down in the corner and the last three seconds go red. When it hits zero, time’s up, your score locks, and you see your number.

On iPhone, that number lands on the global leaderboard alongside everyone else playing that day and of all time. On the web, we save your personal best locally so you can keep chasing it.

What stays, and what leaves

Your camera feed never leaves your phone or browser. No video, no photos, no body data of any kind is ever uploaded. Everything the camera sees is used once, on your device, and then it’s gone.

On iPhone, the only thing we send to our leaderboard is the display name you picked and your final score. On the web, we don’t send anything at all — your personal best just lives on your device.

Full details in the Privacy Policy.

Common questions