The Wahoo Balance Smartphone Scale keeps track of your weight and BMI by uploading your stats automatically via Wi-Fi:
Figure 7: Wahoo Smart Fitness Scale; source: www.thesimplemoms.com
Bundled with the scale is an app, which can connect to the weight scale over Bluetooth Low Energy and keeps a track record of weight, BMI, and body fat percentage over a period of time and can help the user visualize the same information.
To know more about the Wahoo Fitness Scale, visit http://eu.wahoofitness.com/devices/accessories/wahoo-balance-smartphone-scale.
If you want to share your weight with others, such as a coach or a caregiver, the scale can upload your data automatically to registered accounts at MyFitnessPal.