California Penal Code Sections 632 and 632.7 (Recording Confidential Communications) 632(a): 632(a) Obtain the consent of all parties before recording or eavesdropping on a confidential communication

A person may not, intentionally and without the consent of all parties to a confidential communication, use an electronic amplifying or recording device to eavesdrop on or record it, whether the parties are together in person or talking by telegraph, telephone or another device (radio excepted). Penalty: a fine of up to 2,500 dollars per violation, up to one year in county jail or state prison, or both; up to 10,000 dollars per violation after a prior conviction under ss. 631, 632, 632.5, 632.6, 632.7 or 636.