Withings' other announcement today was an updated Wi-Fi scale that measures your heart rate, as well as the quality of the air in which you sleep and reside. A sensor on the scale probes the surrounding air every 30 minutes, a Withings spokesman tells us, and every morning when you jump on, it'll give you a measurement of the carbon dioxide levels in the air over the course of the last 24 hours. All of that info is fed back wirelessly to the Withings mobile app where it's parsed and digestible in some manner.
Otherwise, it appears to work the same as previous generation Withings scale. Seems a little helicopter parent-y but maybe you live in an area with dirty air.