| 摘要 |
PROBLEM TO BE SOLVED: To use and provide information related to a position where an individual exists, while reducing risk of specifying the individual.SOLUTION: A control device 10 is configured so that: a conversion part 12 specifies at least one abstracted pattern in which, about respective position data, a position where the respective position data exists, and an area position of the position data match, based on a position data group acquired by an acquisition part 11 and plural abstracted patterns stored in a storage part 13. An available pattern specification part 14 determines whether or not a number of individual IDs in which, the area position and exist position match, about the respective abstracted pattern specified by the conversion part 12, is k pieces or more (k is a set value and positive integer of 2 or more), based on the position data group acquired by the acquisition part 11. The available pattern specification part 14 specifies the abstracted pattern in which, the number of individual IDs is k pieces or more, as an available pattern. |
