Compatible devices from Withings:
Withings Body Scale
Withings, like many other device/app companies, utilizes the TrainingPeaks API (Application Programming Interface) with their products so that you, the consumer, can directly submit or transmit data into your TrainingPeaks account(s). In utilizing our API, the Withings development team is in charge of designing and managing their interaction of devices/apps with TrainingPeaks.
Because Withings manages this aspect of their products, you will want to reach out to their support team with questions, comments and concerns about the connectivity and accuracy of transmitted data.
You can find the Withings support pages and contact information, here: