Such that it is obvious if any tampering has occurred.

The condition, fact, or quality of being self-evident.

(law) A legal standard, applied in many jurisdictions for deciding the outcome of civil disputes, which requires that evidence be sufficient to determine that a claim is more likely to be true than not.

Based only on actual evidence, rather than tradition etc.

(law) In a legal forum, testimony which is from an under-oath witness who is reciting an out-of-court statement, the content of which is being offered to prove the truth of the matter asserted.

(law) Evidence that relies on an inference to connect it to a conclusion of fact.

plural of demurrer to evidence

(US, law) Evidence discovered after a legal decision has been reached. A party may attempt to have the decision reversed using this evidence. They must first prove that the evidence could not have been discovered until after the decision was reached.

(medicine) Health care whose policies and practices are derived from the systematic, scientific study of the effectiveness of various treatments.

(law) A legal principle that holds an original copy of a document as superior evidence.