I'm surprised there still is referencing a hard limit. You would think that you could install it on as many workstations as you wanted to, and only up to 255 people could get in at once because that's the license limit. FYI -- the reason why the license limit is 255 is because of the ""user key"" -- it's hard coded to 2 characters in hex and in hex with only 2 characters the largest number you can go is 255 (which translates to FF). Hex goes from 0-9 and A-F. So it goes from 00-FF.