53 Pa. Stat. § 25294
Every applicant for such license shall furnish with his application two photographs, being fair likenesses, and upon which shall be endorsed such information prescribed by the superintendent of police or chief of police as may be necessary for the identification of the said applicant. One of said photographs shall be retained by the superintendent or chief of police, and one shall be attached to a card of identification included in or issued with the license hereinabove provided for; which license and card of identification shall be produced upon request of any superintendent of police, chief of police, or any other police officer of the Commonwealth. Said identification card shall have space provided thereon, upon which, in case the holder thereof is arrested for any offense, it shall be the duty of any magistrate, alderman, or justice of the peace before whom said holder shall appear to write upon said card the date of such arrest, the charge upon which said arrest shall have been made, and the disposition made of the case by said magistrate, alderman, or justice of the peace, which notation on said card shall be signed by such magistrate, alderman, or justice of the peace.
53 P.S. § 25294