What is authentication?
All tangible and physical evidence must be authenticated.
To authenticate, the proponent must produce sufficient evidence to support a find that the thing is what the person says it is.
For example, someone with personal knowledge of the evidence can authenticate it.
What is the Best Evidence Rule?
BER requires that the original document, or reliable duplicate, be produced to prove contents of:
1) Writing
2) Recording
3) Photo
4) X-Ray
5) Video
This rule only applies when:
1) Contents of document are at issue
2) Witness is relying on the contents of the document when testifying