Systems and methods are described that calculate the interestingness of a set of one or more records in a database, either absolutely or relative to some other set of records. A platform is provided to integrate, access, and control any type of local device, and to use any type of back-end application to processed collected data from the local devices. The first end portion of the coupling shaft in the axial direction is joined to the roller drive shaft and the rotation roller in the coupling member of the rotation roller, and a second end portion of the coupling shaft in the axial direction is a free end that allows the coupling shaft to extend and contract in the axial direction. A connecting section extends between the engagement portions of the locking member. The first cell identifier is different than cell identifiers assigned to the cells detected within the selected distance from the first cell. One embodiment of the invention includes a user device including a processor configured by an operating system, where the processor is further configured by an application platform including a natively implemented virtual.