So there I was, having a martini or three with a computer security person.

We started talking about two-factor authentication and I said:

"You should have to supply your DNA to authenticate"

She said: "But somebody else could have your DNA"

So I said: "Well then, the only solution is to require supplying enough of
it, so somebody else wouldn't have that much".

I posited: "A fingertip would be too much, cause then you couldn't type"

She said" "How about a pint of blood?"

EUREKA! That's it! I said. "A pint of blood to login".

In just three small martini's we have solved the problem of poor quality
operating systems.

If everybody had to give a pint of blood just to login. They'd DEMAND
better operating systems.