A multi-touch and multi-user detecting device comprising: a sensor conductor section (100, 11, 12) including a plurality of first conductors (12X1, 12X2,...) arranged in a first direction and a plurality of second conductors (11Y1, 11Y2,...) arranged in a second direction intersecting said first direction; a signal transmitting circuit configured to supply determined signals to the plurality of first conductors (12X1, 12X2,...) arranged in said first direction; a signal receiving circuit (31, 32) configured to receive signals from the plurality of second conductors (11Y1, 11Y2,...) arranged in said second direction; an indication position detecting circuit configured to detect positions indicated by a plurality of indicators on said sensor conductor section (100, 11, 12) based on said signals that are output from said signal receiving circuit (31, 32); and a correspondence relation determining circuit configured to determine a correspondence relation that indicates which one of the positions indicated by the plurality of indicators is based on an indication operation performed by which one of the plurality of indicators respectively coupled to a plurality of signal generators (2A, 2B) of different users; wherein a first indicator identifying information detecting circuit (331, 400) configured to receive said signals that are output from said signal receiving circuit (31, 32), and to detect indicator identifying signals, which are indicative of the plurality of signal generators (2A, 2B) of the different users coupled to said plurality of indicators that are used to indicate the detected positions, and which are distinguishable from the determined signals supplied by said signal transmitting circuit to the plurality of first conductors (12X1, 12X2,...) arranged in said first direction; and wherein the correspondence relation determining circuit is configured to determine said correspondence relation based on positional information that is output from the indication position detecting circuit and the indicator identifying signals that is output from the first indicator identifying information detecting circuit (331, 400). a sensor conductor section (100, 11, 12) including a plurality of first conductors (12X1, 12X2,...) arranged in a first direction and a plurality of second conductors (11Y1, 11Y2,...) arranged in a second direction intersecting said first direction; a signal transmitting circuit configured to supply determined signals to the plurality of first conductors (12X1, 12X2,...) arranged in said first direction; a signal receiving circuit (31, 32) configured to receive signals from the plurality of second conductors (11Y1, 11Y2,...) arranged in said second direction; an indication position detecting circuit configured to detect positions indicated by a plurality of indicators on said sensor conductor section (100, 11, 12) based on said signals that are output from said signal receiving circuit (31, 32); and a correspondence relation determining circuit configured to determine a correspondence relation that indicates which one of the positions indicated by the plurality of indicators is based on an indication operation performed by which one of the plurality of indicators respectively coupled to a plurality of signal generators (2A, 2B) of different users; wherein a first indicator identifying information detecting circuit (331, 400) configured to receive said signals that are output from said signal receiving circuit (31, 32), and to detect indicator identifying signals, which are indicative of the plurality of signal generators (2A, 2B) of the different users coupled to said plurality of indicators that are used to indicate the detected positions, and which are distinguishable from the determined signals supplied by said signal transmitting circuit to the plurality of first conductors (12X1, 12X2,...) arranged in said first direction; and wherein the correspondence relation determining circuit is configured to determine said correspondence relation based on positional information that is output from the indication position detecting circuit and the indicator identifying signals that is output from the first indicator identifying information detecting circuit (331, 400).