From Powerful Psychic Reading:
Have you ever touched someone or something and gotten some kind of message ó such as ideas, pictures, or words? While shopping in an antique store, do you pick up impressions about certain pieces? You are experiencing this phenomenom!
It is the art of interpreting the psychic vibrations contained in objects. Sometimes referred to as "psychic touch," it is the ability to read an object's history or the history of those who may have handled it. Some common items used in its practice are rings, bracelets, necklaces, earrings, and watches. Any of these items will hold information about the wearer, such as thoughts, their emotional state, and sufficient events affecting the personís life.
Note: Excellent article, including "How To Practice Psychometry" and "Some people can distinguish colours and patterns through dermo-optic perception".
From The Mystica, an on-line encyclopedia of the occult:
The ability or faculty to perceive the characters, surroundings, and events connected with a person by holding an object belonging to that person in ones hands.
Mrs. Hester Drowden, a famous medium, defined psychometry as "a psychic power possessed by certain individuals which enables them to divine the history of, or events connected with, a material object with which they come into close contact."