What is conditional evidence?

Answer 1

Evidence produced by a specific event oraction; important in crime scene reconstruction and in determining the set of circumstances or sequence within a particular event

Another View: Conditional Admissibility is the evidentiary rule that when a piece of evidence is not itself admissible, but is admissible if certain other facts make it relevant.

Such evidence becomes admissible on condition that counsel later introduce the connecting facts. If counsel does not, or cannot, satisfy this condition, the opponent may ask the judge to strike from the record the conditionally admitted piece of evidence and to instruct the jury to disregard it