Why is "Riley v. California" significant in search and seizure law?

The significance of "Riley v. California" in search and seizure law lies in its ruling that law enforcement must obtain a warrant before searching the digital information contained on a cell phone, even if the phone is seized incident to an arrest. This decision acknowledges the vast amounts of personal and sensitive data stored on modern mobile devices and emphasizes people's right to privacy in their digital communications. The Court recognized that cell phones are not merely containers like pockets or bags; they hold extensive information about individuals that can reveal personal details about their lives. Therefore, this ruling requires law enforcement to respect individuals' Fourth Amendment rights against unreasonable searches and ensures that any invasive search of digital information occurs only after obtaining proper judicial authorization.

The other options do not address the key points established in "Riley v. California" and therefore do not hold the same weight in terms of its significance in shaping search and seizure law.