I'd like to create a challenge based on the geocachers' nick-name. As is often the case, only the characters of the alphabet and the numbers of the nick-name are taken. I would like to take the special characters of the nick-name too.
In other words, if the nickname is ABC&123.[D ] the geocacher must have found caches starting with each character of the nick-name and not only caches starting with letters and numbers.