In order to determine the character and fitness of an applicant for a license or registration, the Township Secretary is hereby authorized to prepare an application form which shall contain questions concerning, but not limited to, the applicant’s personal qualifications, criminal record and past business affiliations, and also questions concerning the particular wares or merchandise to be sold in order to determine whether the same are safe and harmless or whether certain safety or protective measures must be taken in connection with their use. Such application shall be signed by the applicant and his or her oath or affirmation taken therewith.