{"code":"PEN","codeName":"Penal Code","section":"17290","citation":"Pen. Code, § 17290","status":"in-force","lawOn":"2026-09-28","headings":[{"name":"PART 6. CONTROL OF DEADLY WEAPONS [16000. - 34400.]","url":"https://blackletter.si/penal-code/part-6"},{"name":"TITLE 1. PRELIMINARY PROVISIONS [16000. - 17360.]","url":"https://blackletter.si/penal-code/part-6/title-1"},{"name":"DIVISION 2. DEFINITIONS [16100. - 17360.]","url":"https://blackletter.si/penal-code/part-6/title-1/division-2"}],"history":"Added by Stats. 2010, Ch. 711, Sec. 6.   (SB 1080)   Effective January 1, 2011.   Operative January 1, 2012, by Sec. 10 of Ch. 711.","effective":"2011-01-01","html":"<p>As used in this part, “undetectable knife” means any knife or other instrument, with or without a handguard, that satisfies all of the following requirements: </p><p>(a) It is capable of ready use as a stabbing weapon that may inflict great bodily injury or death. </p><p>(b) It is commercially manufactured to be used as a weapon. </p><p>(c) It is not detectable by a metal detector or magnetometer, either handheld or otherwise, which is set at standard calibration.</p>","text":"As used in this part, “undetectable knife” means any knife or other instrument, with or without a handguard, that satisfies all of the following requirements: (a) It is capable of ready use as a stabbing weapon that may inflict great bodily injury or death. (b) It is commercially manufactured to be used as a weapon. (c) It is not detectable by a metal detector or magnetometer, either handheld or otherwise, which is set at standard calibration.","otherVersions":[],"url":"https://blackletter.si/penal-code/definitions-17290","source":"California Legislative Information bulk export (pubinfo)"}