[burgerbrain]

"we'll you really 'would' have to know 'a lot' about them if these devices had high entropy."

That is why I'm asking what kind of entropy the serial numbers have.....

"which - if a person was indeed killed by this method - an autopsy would show either a spike or lapse in delivery of insulin. such a lapse would immediately lead to an investigation as to why the unit did not respond ?"

I'm confused how that is related to the entropy of the serial numbers.