The registration must be in the form and contain the information that the Police Commissioner requires. The registration must specify:the gun offender’s name; a description of the crime for which the gun offender was convicted; the date that the gun offender was convicted; any other name by which the gun offender has been legally known; a list of all aliases that the gun offender has used; identifying factors of the gun offender, including a physical description; the gun offender’s residence; and any other information required by the rules and regulations adopted by the Police Commissioner under this subtitle. The registration must be signed and dated by the gun offender. At the time that the gun offender appears at the office, the Police Commissioner may photograph the gun offender. The Police Commissioner may require the gun offender to provide documentation that verifies the contents of the registration Ord. 07-506