This isn't true. Contemporaneous evidence may often be admissable in court, subject to other legal tests and challenges regarding its relevance, reliability and

This isn't true. Contemporaneous evidence may often be admissable in court, subject to other legal tests and challenges regarding its relevance, reliability and integrity. Any evidence that you have that can corroborate your story will be useful to you, hence digital trails are defensive tools to innocent people, even though appearing on CCTV or near a crime could be sufficient for further investigation including questioning, detainment, or other forms of inquiry.