The gentlemen who wrote this post takes an approach I'm not comfortable supporting: The signal and commands haven't been successfully reversed engineered yet so this isn't a real threat.

A little bit about my background: 10+ years successfully (legally) reverse engineering software technology that required both client software and packet manipulation in industries that have been very proactive against it.

Seeing as the medical devices are hardware items issued to unique individual recipients the issue could easily be fixed with a 1024+ Public Private Key-Pair between the devices unique to each issuance.

However, this does nothing to protect the many millions of individuals, using today's devices, potentially exposed to the threat described by Jay Radcliffe.