No person shall engage in the business of a solicitor within the city without first having procured a license therefor from the Mayor. Each licensee shall have his or her license with him or her at all times while engaged in the business of soliciting in the city, and shall exhibit it to any police officer or other city official upon demand. Each licensee shall, upon demand by any police officer or other city official, sign his or her name for comparison with the signature upon his or her license or license application.
Penalty, see § 729.99