In offline mode (without using Bluetooth to connect to the app), the scale can store data for up to 8 users, with each user able to store 30 measurement data points. After a successful measurement, the scale's Bluetooth will automatically activate and sync the current user's data to the VitaDock+ app.
Regarding the Medisana VitaDock+ application, each user needs to register an account and log into the app before using it. This allows the scale data to be synchronized with the individual account (each account can only record data for one person). There is no limit to the number of accounts that can be created.