A persons cell phone has more personal information and thus more evidence about that person each and every day. Cell phones have GPS data, photographs, bank records, medical records, emails, and social media posts. All of this information, often a life worths of information is now stored, and easily accessed on one mobile device that fits in your hand. This information is also treasure trove of evidence for law enforcement who are looking for clues of whether or not a crime has been committed.
