A couple of years ago I had a to-do with my doctor about blood pressure. They took it in the surgery and pronounced it super high on the spot. I felt there was nothing wrong with me and invested in Withings Smart Blood Pressure Monitor) the next time I went I was armed with a blood pressure reading for 6 months and it was clear there was nothing wrong. So started my obsession with tracking personal data over time; I have a Jawbone Large UP on my wrist tracking movement; bought the earlier version of these scales a while back. Withings and UP actually work together so my Smart Scale information is visible in the UP app too.
The new scales retain the same sharp look for your bathroom; with a polished glass surface; a bright easy to read LCD. If you have an iPhone they are super easy to setup with your phone; I downloaded the Withings app from iTunes; flip the scales over and press a button to tell the scales to connect to the phone. The app see's the scales and they connect; connecting them to wifi is all done for you - the app does all the hard work. Once its setup each member of the family can use the scales and using some weight / bmi voodoo it knows who everyone is and seems to always get it right.
Step on the scales and the large screen lights up and arrows tell you how to centre your body weight. Each measurement you take is then beamed to the website / your phone; and to the secure Withings website (you can give your doctor access.) After it gets your weight it measures BMI, body fat percentage and heart rate and reports the whole lot to your phone. If you are trying to lose weight the application is really good at supporting this; you can set weight loss goals over time and see how it is going.
One new feature on the latest smart body analyser is a CO2 sensor that warns you if you have too much in your home. Living in a city centre my CO2 varies during the day form about 300-700ppm. I had a house-full of guests one night and it went through the roof to 1700 so it looks like it works.
As scales alone the Withings Smart Body Analyser are expensive; there is a cheaper model that loses the body fat and heart rate monitoring (as well as the CO2 measurement.) The Withings scales are only a small piece of the whole; the easy to use App and data heavy website allow you to store data over time and present it in a way your Doctor gets a better picture than they would get from a snapshot.