Abstract: A network system uses a hybrid passive and active method for aggregating sensor data. The network system processes the sensor data to generate or update map information, which is used to coordinate geographic based services between users of the network system. In an embodiment, to leverage the idle time of users not actively providing services, the network system provides tasks for the users to collect sensor data for roads or points of interest (POIs) within a geographic region for which the network system is missing map information. The network system may determine that a user is more likely to complete a certain task if the target location for sensor data collection is nearby the user's current location. Thus, the network system is able to micro-target users with specific tasks, resulting in a greater likelihood of efficiently matching tasks to users.

Abstract: A point-of-care, screening kit for use by a heath care worker to create custom test strips for screening the bodily fluids of an individual for various, medical conditions includes: (a) a plurality of reagents (12), (b) a substrate (18) configured to: i) receive one of the reagents and react with it so as to cause it to acquire a first characteristic color, and, ii) upon the addition of the individual's bodily fluid to the substrate, acquire, as a result of the formulation of each of the reagents, a second, dichotomous characteristic color when the individual has a specific one of the various, medical conditions.

Abstract: A point-of-care, screening kit for use by a heath care worker to create custom test strips for screening the bodily fluids of an individual for various, medical conditions includes: (a) a plurality of reagents (12), (b) a substrate (18) configured to: i) receive one of the reagents and react with it so as to cause it to acquire a first characteristic color, and, ii) upon the addition of the individual's bodily fluid to the substrate, acquire, as a result of the formulation of each of the reagents, a second, dichotomous characteristic color when the individual has a specific one of the various, medical conditions.