dutchflyboy
Joined 17 years ago
Joined 17 years ago
Degrees in one inch - arctan(1/24)2 = 4.77 "Data points" in eye for one inch, 12" away: 4.7750*2 = 477 (magic number cited in article)
Why the last multiplication by 2? The eye doesn't see pixels, it sees color difference, which means that the limit (not the minimum) is when two of those pixels cover the same "cycle" -> 1 color change in the cycle (in any case, that's how I understood the article).
(From Zune.net: "The songs are yours to play on up to three computers, and three Zune players and phones, for as long as your Zune Pass is valid." and "Additionally, a Zune Pass gives you 10 song credits to redeem each month. You can keep these songs forever - they become part of your permanent collection.")
Don't be intrusive, it's not necessary, and will probably scare away people. Just explain why the website isn't working perfectly.
But I still wonder how fast the birthday paradox/problem would hit such an identification system. (http://en.wikipedia.org/wiki/Birthday_problem)