California Codes, Business and Professions Code - BPC, Division 3 — Professions and Vocations Generally, Chapter 8.5 — Locksmiths, Article 7 — Conduct of Business, Section 6980.54
(a) A locksmith licensed by the bureau shall be subject to the provisions of Section 466.6 of the Penal Code, and shall be able to duplicate any key for any vehicle from another key.
(b) A locksmith licensed by the bureau shall be subject to the provisions of Section 466.8 of the Penal Code, and shall be able to duplicate any key for a residence, commercial establishment, or personal property from another key, except as follows:
(1) Duplication is prohibited when a key is stamped, imprinted, marked, or incised with the wording “Do Not Duplicate” or “Unlawful To Duplicate” and includes the originator’s company name and telephone number.
(2) Duplication is prohibited when a key is a Restricted Key or a High Security Key and includes the originator’s company name and telephone number or registration number.
Notes
Allows a bureau-licensed locksmith to duplicate vehicle keys from another key and residence, commercial, or personal-property keys from another key, subject to specified Penal Code provisions. Prohibits duplication when qualifying keys are marked “Do Not Duplicate” or “Unlawful To Duplicate,” or are restricted or high-security keys, with the required originator identifying information.
Use as reference
Lexinter.net | California Code, Business and Professions Code - BPC § 6980.54 | https://laws.lexinter.net/codes/california/business-and-professions-code/division-3/chapter-8-5/article-7/section-6980-54