A licensed locksmith shall provide to a local law enforcement unit or the Department a copy of each invoice or receipt for services requested by either a local law enforcement unit or the Department. The Secretary shall encourage licensed locksmiths to develop a system for maintaining the records required by this subtitle electronically. On a request for an invoice or a receipt for services under subsection (a) of this section, the licensed locksmith shall submit the item by one of the following methods: by delivering or mailing a copy of the invoice or receipt for services within 5 business days after receiving the request; or by transmitting a copy of the invoice or receipt for services electronically, in a format acceptable to the receiving local law enforcement unit or the Department, within 2 business days after receiving the request. Each copy of an invoice or a receipt for services, submitted to the local law enforcement unit or the Department, shall include: the license number of the licensed locksmith; and the information required under § 12.5–301 of this subtitle. A copy of an invoice or receipt for services submitted under this section: shall be kept confidential; is not a public record; and is not subject to Title 4 of the General Provisions Article. A local law enforcement unit or the Department may destroy the copy of an invoice or receipt for services submitted under this section after 1 year from the date the local law enforcement unit or the Department receives the copy.