Residential door hardware companies will soon be shifting to radio-signal devices, if it follows the trend in the automotive industry, experts say.  Consider the 2006 Lexus GS sport sedan, on sale next month.  USA Today reports that when a driver carrying an electronic fob steps within a few feet of the GS, the doors or trunk can be opened without a key. Of course, there are already naysayers that claim the system is hackable, though Texas Instruments claims that there has never been a security breach.  The article also cites the similar example of hotels, which now almost exclusively use electronic cards for room entry.  Yeah, except for when a magnetic device in your pocket renders the card useless and you’re stuck outside.  Still, the concept of electronic house keys may yet be an inevitable evolution of our way of life.

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