Technological advancements have always posed a dual challenge and opportunity for various sectors, and in law enforcement, they have been distinctly beneficial. In the early 20th century, police investigators relied heavily on physical means to gather evidence, often spending extensive time interviewing unreliable witnesses and utilizing limited forensic tools such as fingerprint analysis and basic ballistics. As forensic science evolved in the latter half of the 20th century with the introduction of DNA analysis and sophisticated techniques, alongside the proliferation of surveillance cameras, the ability to collect and interpret physical evidence grew immensely.

However, nothing has compared to the transformative impact of smartphones on investigative processes. These devices serve as dual-purpose tools: they act not only as repositories for crucial evidence in criminal activities but also as psychological traps that unwittingly lead criminals to record and compile information that can incriminate them. As a result, specific crimes have become remarkably easier to investigate, as perpetrators unknowingly leave a digital trail of their activities and intentions.

A notable example is the investigation into the invasion of the Praça dos Três Poderes on January 8, where evidence derived from smartphones played a pivotal role in understanding the motives and actions of the individuals involved. Law enforcement agencies are now equipped with technology that provides immediate access to a wealth of information, revolutionizing the speed and accuracy with which they can solve crimes. This illustrates a significant shift in the landscape of crime-solving, leveraging technology for enhanced public safety and justice.