I am looking at mine and I had to give it to them also.I have no clue why.I guess it is to make sure we are legal residence of Illinois.It is also a way for them to track who is killing deer and who isnt I guess.I agree it shouldnt matter.I dont have my DL at this time damn DUI but I gave them the info anyways.I just happen to know my DL# by heart.it also helps that our local bank issues the tags for us.All the hunters here in this town and the Owner and his son are big hunters also.