> (it seems unlikely that all ~135,000 would) but it doesn't seem like it would take very many slight differences like this to be able to generate a unique version of this memo for each viewer.
18 differences would cover it. A few less people and they could get away with 17, which would yield 131072 combinations.
That's assuming each combination is binary, if they have more variations you'd need less, of course.
18 differences would cover it. A few less people and they could get away with 17, which would yield 131072 combinations.
That's assuming each combination is binary, if they have more variations you'd need less, of course.