Kaylee just gave me an astonishing interview in which she described synesthesia related to machinery. Of the 60 or more types of synesthesias now identified, it seems to most correspond to mirror-touch in which someone literally feels the pain or emotion of another—but until now, that "other" was usually human.
I recall talking with the gifted Russian psychologist, synesthesia researcher and coordinator of the website of the Russian synesthesia community, Dr. Anton Sidoroff-Dorso, about how synesthesia seems to be evolving with technology. Of all our many cross-associations, it seems that we can blend senses with nearly any stimulus, including brand new ones. But frankly, Kaylee's case goes beyond anything I'd previously imagined.