I'd love to hear if anyone has suggestions with an additional feature: - No internet access / sign up / data syncing to the cloud is required (ideally it would

I'd love to hear if anyone has suggestions with an additional feature: - No internet access / sign up / data syncing to the cloud is required (ideally it wouldn't exist at all). The ideal would be connecting the device directly to a computer via USB or bluetooth and pulling the data / logs off of it directly. Combined with open data access / reverse engineering this would be very powerful. Basically I want a band where it is impossible for anyone besides me to get access to my data (without physically stealing the band or hacking my computer).