(a) A custodial interrogation to which § 2003 of this title otherwise applies need not be recorded electronically if the individual to be interrogated indicates that the individual will not participate in the interrogation if it is recorded electronically. The individual's agreement to participate without recording must be recorded in a written document that is signed by the individual.
(b) If, during a custodial interrogation to which § 2003 of this title otherwise applies, the individual being interrogated indicates that the individual will not participate in further interrogation unless electronic recording ceases, the remainder of the custodial interrogation need not be recorded electronically. The individual's agreement to participate without recording must be recorded electronically.
(c) A law-enforcement officer, with intent to avoid the requirement of electronic recording in § 2003 of this title, may not encourage an individual to request that a recording not be made.