What could possibly go wrong?

from here and here (source article)

So now that COVID-19 tests are Bluetooth enabled (with all the consequences that come with that), when you get a positive result you have to wonder - Are you sick, or is your device sick? 

We're bound to get screwed

from here

Basically ALL Bluetooth devices could be tricked into using a 1 byte encryption key because the protocol designers were trying to comply with "international encryption regulations". 

This is probably what most encryption backdoors would wind up looking like if it became official policy. Most won't be coordinated with any government agency, they'll just some quick and dirty thing that gets jammed in with the hope that no one notices. If/when the Feds come knocking, the developers can just point to it and say there, use that.