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Locations registered by Igot-U GPS data-loggers assigned to a carpenter (A) or a moto-taxi driver (B) for 14-16 days (black dots). Insets zoom to the locations identified by the I-clustering algorithm (red dot) as most frequently visited by each participant. Pictures show the size of the Igot-U GPS data-logger and the neck-strap wearing mode. Location of participants' houses is not presented to preserve their identity.
