One of the wildest and most whimsical gadgets we've seen in quite a while is here on the show floor at CES: the Hapifork. It's a "smart fork" that has a Bluetooth radio, a capacitive sensor, and a vibration motor built in. The idea is that as you eat, every time the fork touches your mouth it triggers the sensor, measuring your bites on the app. If you eat too quickly, the fork vibrates to tell you to slow down.

French creator Hapilabs' contention is that eating too fast is a cause of weight gain, so a smart fork that slows you down will help you lose weight. The fork pairs with a mobile app that not only tracks every bite, but also when your meal begins, ends, and even how long each "fork duration" is — how long it takes to actually move the food from the plate to your maw.

It tracks every bite from your plate to your maw

This is the first time that the final, production version of the Hapifork has been shown, and it worked pretty well in our testing — we should note that we weren't actually using it to eat, however, since a touch of the finger is enough to trigger the fork's electrical sensor. If tracking your steps and your heartbeat isn't enough for your quantified self obsession, Hapilabs says that its fork will be available soon for $99.99. A USB version that pairs with your computer is set for release in Q2, but if you want to hook your fork up to your mobile you'll have to wait until Q3 for the Bluetooth-enabled version.

Dieter Bohn contributed to this report