Psychometry is the technique of "reading" psychic impressions from objects. Psychometry is a psychic gift that arises from the intuitive faculties of the reader. It's a common technique for Psychics who assist in criminal investigations and missing persons cases. They hold an object belonging to the victim or missing person, and receive impressions from that object.
Psychometry is based on the assumption that our biomagnetic aura is somehow imprinted on objects that remain in close proximity to us, including clothing, jewelry, and other such objects. Certain substances, most notably metallic objects, seem to retain the “memory” of the owner longer than others. The longer the object was in close proximity to the owner, the stronger the magnetic “memory” left behind. Therefore, a wedding band that is worn continuously for fifty years will have a strong impression of the wearer that might linger for centuries, however a scarf worn for a single day will have less of a “charge” that will quickly dissipate.
~Flame RavenHawk