[valenceelectron]

Phones are ubiquitous in every country I've spent a reasonable amount of time so far. If my phone breaks I can just walk into a store and get a new one. The sensor will transfer its connection to the new phone within minutes. So that really is not that big of a deal. Some edgy liberation fighter DoS'ing my phone, however, is.

Also note that there are people that have such sensors and insulin pumps connected in a feedback loop. I don't personally but this exists. There also exists a small open source scene around that topic. Examples are https://openaps.org/ or https://nightscout.github.io/

> Your life should not depend on your phone working

My life as diabetic depends on many, many variables. Theoretically, all it needs is an incorrectly labeled meal to do serious harm. Or the delivery guy transporting my insulin didn't maintain cooling. I can only do so much and still live a life without constant fear. While this may sound dangerous to you, this way of measuring your blood glucose is extremely liberating for diabetics. The alternative is just so much worse.