Facial recognition and other automated systems can give police powerful investigative leads. When the technology makes a mistake, however, an innocent person can suddenly become the focus of an investigation.
A locked phone can contain years of private information. Whether the government can force someone to unlock it may depend on how it is locked, what investigators already know and which court is deciding the issue.
A witness can look directly at a defendant and sincerely say, “That's the person I saw,” yet still be mistaken. Decades of wrongful-conviction cases have changed what courts know about eyewitness memory and certainty.
Social media posts can survive for years through screenshots, account records and other copies. When a lawsuit, criminal case or other dispute begins, an old post can become evidence with consequences its author never anticipated.
Witnesses can disagree about what happened, but timestamps often tell a different story. Phone records, receipts, cameras, access logs and other records can turn a confusing case into a minute-by-minute reconstruction.
Photos, email, social media, cloud files and online accounts can survive long after their owner dies. The law increasingly has to decide who may access, preserve or control a person's digital life.
A receipt can establish where money went, when a purchase happened and whether a story fits the records. But sometimes the most important evidence is the receipt that should exist—and doesn't.
A mistaken identification, shared name, bad database entry or flawed investigation can put an innocent person in handcuffs. What happens when police arrest the wrong person—and the mistake is not discovered immediately?
A confession can seem like the strongest evidence imaginable. Yet documented wrongful convictions show that innocent people sometimes confess—and understanding why can completely change how a case is viewed.
Doorbell cameras, store surveillance systems and home security cameras record far more than crimes against their owners. When something happens nearby, privately recorded video can become important evidence in a police investigation.
A witness gives one account immediately after an event and another months later. Changed stories can reshape a case—but the reason for the change may matter as much as the inconsistency itself.
The person who knows the most about a case may never testify. Death, disappearance, privilege, the Fifth Amendment and strategic decisions can leave jurors deciding what happened without hearing from a crucial witness.