Affidavit – this term details a statement which before being signed, the person signing takes an oath that the contents are, to the best of their knowledge, true. It is also signed by a local notary public, to the effect that the person signing the affidavit was under oath when doing so. And also to prove the identity the person who signed. In some jurisdictions, these documents carry great weight in Courts to the extent that judges frequently accept it instead of the testimony of the witness. In other legal systems, only oral testifying is allowed in the court trials.