[shermantanktop]

I don’t think it is like that at all.

Perhaps if your bic pen fed your scratches into a system that ignored aberrant marks, cleaned up your letters, ran a spell check, and printed the result in the font of your choice?

This glucose device is a sensor. Sensors generally produce noise, sometimes a lot of noise, and require post processing in order to get the signal you wanted. The raw data is interesting but often not reliable as input.

That kind of processing is usually complex and companies often seek IP protection and close their source or use DRM. Whether that’s good or bad is a matter of opinion but the motivation is clear.