Authentication Rule
To satisfy the requirement of authenticating or identifying an item of evidence, the proponent must procure evidence sufficient to support a finding that the item is what the proponent claims it is.
What is tangible evidence?
Real evidence may be authenticated by:
Self-Authentication
C.O.N.T.A.C
Certified documents
Official publications by a public authority
Newspapers and periodicals
Trade inscriptions
Acknowledged documents
Commerical paper