All trackle servers are located in Germany.
Any smartphone would probably have enough computing capacity to evaluate the data, but we deliberately decided to have the data evaluated on the server, because your data is safer on a professionally hosted server than it would be on an end client device. A smartphone can get lost, stolen, or – and this is most often the case – it is replaced every two or three years when users buy a new device. In all of these cases, accessing any data on the device is difficult or impossible. Migrating data to a new device is complicated and error-prone.
When we need to make adjustments in the evaluation of cycle data or even have an error in our algorithm, we must be able to stop any faulty evaluation immediately – this is actually even required by official regulations. Of course, we can do this much more efficiently with our server-client architecture than with a pure client approach.
We are aware that the trackle data is surely not only subjectively perceived as very sensitive simply because of the place where it is collected, but in its entirety would allow very private conclusions to be drawn. That is why we worked especially hard to provide strong data security. The measurement data is signed right on the sensor and is only transmitted via secure data connections (TLS 1.2). Our backend, where the data evaluation takes place, also works with signed data only. The signature can only be opened in the user’s app, where the user’s key is stored, and only then does the data become readable to humans. The backend contains no personal data whatsoever (meaning no names, no addresses, no phone numbers, no email addresses, no credit card information, etc.). The personal data we need to process orders (online shop) is kept in physically separate systems and cannot be linked with the data in the backend.