In this paper we propose an object-triggered human memory augmentation system named ‘‘Ubiquitous Memories’’ that enables a user to directly associate his/her experience data with physical objects by using a ‘‘touching’’ operation. A user conceptually encloses his/ her experiences gathered through sense organs into physical objects by simply touching an object. The user can also disclose and re-experience for himself/herself the experiences accumulated in an object by the same operation. We implemented a prototype system composed basically of a radio frequency identification (RFID) device. Physical objects are also attached to RFID tags. We conducted two experiments. The first experiment confirms a succession of the ‘‘encoding specificity principle,’’ which is well known in the research field of psychology, to the Ubiquitous Memories system. The second experiment aims at a clarification of the system’s characteristics by comparing the system with other me...