A data recording/reproducing device includes: a position detection unit that detects information (hereafter referred to as position information) indicating a position at which data are acquired and reproduced; a determining unit that determines which specific set of geographical information, among a plurality of sets of geographical information defined in advance, the position information detected by the position detection unit at the time of data acquisition and data reproduction corresponds to; a recording control unit that records the acquired data into a recording medium based upon determining results provided by the determining unit; a selection unit that selects reproduction-permitted data from the recording medium based upon the geographical information determined by the determining unit at the time of data reproduction; and a reproducing unit that outputs and reproduces at least one set of data among the reproduction-permitted data having been selected.