1. A computer program product for object identification, the computer program product comprising a non-transitory computer readable storage having program instructions embodied therewith, the program instructions executable by a computer, to cause the computer to perform a method comprising: receiving at least one of a vibration signal or an acoustic signal produced by a physical interaction with an object to be identified, the signal produced during physical interaction with the object by an identification structure coupled to the object; processing the signal to form digital data identifying the object interacted with; and accessing a database using the digital data to retrieve additional information identifying or describing properties of the object.