I read recently a blog post that muses on the chances of a quasi-random license key getting generated with a naughty word.
Checking the parts of a license key against a dictionary of such words is all fine and good, but if you really want to do people a favor, exclude the following symbols which are very difficult to tell apart visually: o0OB8Il1t
There may be others.
I am sick and tired of typing in license keys only to find that what I am reading as a “B” (the letter) is actually an “8″ (the number), or vice versa. Even with glasses or a magnifier it is sometimes difficult.
