Each week Ross Rubin contributes Switched On, a column about consumer technology.
Industry conferences that include competitions among scores of startups generally don't look too kindly upon companies producing hardware. Nonetheless, there were quite a few physical products shown off this week at TechCrunch Disrupt in New York. These were either the main offering of companies or complements to their service offering, and judging by their demo platform of choice, the iPhone appears to be a leading agent of disruption -- the companies introducing hardware used Apple's handset to do everything from avoiding stress to measuring its biological impact. Switched On will introduce four such products after the break.
