Psychometry is a form of scrying - a psychic way of "seeing" something that is not ordinarily seeable. Some people can scry using a crystal ball, black glass or even the surface of water. With psychometry, this extraordinary vision is available through touch. Psychometrists usually scry in a normal state of mind.
The term "psychometry" was coined by Joseph R. Buchanan in 1842 (from the Greek words psyche, meaning "soul," and metron, meaning "measure.") Buchanan, an American professor of physiology, was one of the first people to experiment with psychometry.
Buchanan's theory was based on the belief that every thought, action, and event that has ever occurred since the beginning of time has left an impression on ether. This impression will never be erased during what is considered as time. This is why many closely related the ability of psychometry to the Akashic Records. Buchanan also thought the impressions were not only left on ether but on more palpable objects such as trees and stones as well.