What requirement must every search comply with regarding consent?

Consent must be voluntary and not coerced because this principle ensures that individuals have the freedom to agree to or refuse a search without pressure or intimidation from law enforcement. Voluntariness is a fundamental aspect of consent that upholds an individual's rights, emphasizing that any agreement to a search must be made freely and willingly.

In legal contexts, consent that is obtained under duress or through coercion can render the search invalid, meaning that any evidence collected during such a search may be inadmissible in court. Additionally, the requirement for consent to be voluntary is essential in protecting citizens' rights against unreasonable searches and instilling public trust in law enforcement practices. Understanding this principle helps law enforcement officers conduct their duties ethically and legally, while also protecting the rights of individuals.