From the FAQ: Yes, a minor can apply for a FOID card with a parent or legal guardian sponsor. The parent or legal guardian must be eligible for a FOID card. The parent or legal guardian must also sign an affidavit and attach it to the application. (At this time, if you were born after January 1, 2000, you must submit your application through the alternative call-in method via the Customer Service Call Center at 217-782-7980.)