To provide a support system using a data carrier system by which an activity or a work operation by means of human beings and robots may be supported in a variety of environments. The support system comprises at least one tag being a data carrier that is disposed at a predetermined position; and at least one reader/writer that communicates with the tag; the tag being provided with an input/output means, a predetermined device being connected to the input/output means, and the predetermined device being operated by information output from the reader/writer.