MULTI-LAYER SURVEYING SYSTEMS AND METHODS WITH MULTI-LAYER INCENTIVES

摘要

A system and method for collecting data includes receiving first identification information of a first user, receiving second identification information of a second user that is referred to the data collector by the first user, analyzing the second identification information, determining whether to receive second user data based on the analysis of the second identification information and rewarding the first user if the second user data is received.