Tim Bosher,

Biltmore House in Asheville, NC has used barcoding--with mixed results.
The person to contact for further information is:

        Lori Meeks Garst
        Registrar
        Biltmore House
        One North Pack Square
        Asheville, NC  28801
        (704) 255-1776

Good luck.

Martha E. Battle
Chief Registrar
NC Div. of Archives & History
Raleigh, NC