Cal. Fin. Code § 2104

Each licensee or agent shall prominently post on the premises of each branch office that issues or sells payment instruments, and at machines located in this state and operated by the licensee or agent that issues or sells payment instruments, a notice clearly stating that payment instruments are not insured by the federal government, the state government, or any other public or private entity. This notice shall be printed in English and in the same language principally used by the licensee or any agent of the licensee to advertise, solicit, or negotiate, either orally or in writing, with respect to the purchase of payment instruments. The information required in this notice shall be clear, legible, and in letters not less than one-half inch in height. The notice shall be posted in a conspicuous location in the unobstructed view of the public within the premises. The licensee shall provide to each of its agents the notice required by this section. In those locations operated by an agent, the agent, not the licensee, shall be responsible for the failure to properly post the required notice.