Blueback Physio and Inner UP cannot be used without an internet connection. Indeed, in order to comply with the RGPD and to secure data, they are hosted on a secure remote server. So you'll need to be connected to the internet every time you authenticate. Don't worry, if your connection goes down during use, the system will take care of everything and nothing will be lost. For certain steps, an Internet connection is still required, at which point the system will warn you.