Pennsylvania v. Muniz - Impact

Prior to the Muniz decision, a routine booking question exception to Miranda had gained widespread acceptance among lower courts. The justification for the exception was that an arrestee is not subjected to the coercive atmosphere of custodial interrogation that Miranda was intended to prevent. The Muniz decision stated that routine booking questions, not testimonial in nature, regarding the arrestee's name, address, height, weight, eye color, date of birth, and current age, which are aimed at securing "biographical data necessary to complete booking or pretrial services," and which are asked in that context are exempt from the requirements of Miranda, unless they are "designed to elicit incriminating admissions." This case confirmed that requiring a person in custody to stand or walk in a police lineup, to speak prescribed words, to model particular clothing, or to give samples of handwriting, fingerprints, or blood does not compel him to incriminate himself within the rights of the Fifth Amendment privilege against self-incrimination.