ABSTRACT
Cricket is an indoor location system for pervasive and sensor-based computing environments, which is part of Massachusetts Institute of Technology's (MIT) Project Oxygen. MIT Cricket’s Spatial Information Service enables CricketNav to provide spatial info about accessible paths and space-dividing features. MIT researchers have had more requests for Cricket units than they have been able to handle. MIT Cricket allows applications running on user devices and service nodes to determine their physical location. Ekahau uses standard Wi-Fi signals to estimate locations, rather than time-based measurements that require proprietary infrastructure and can be expensive. Logical areas are user-drawn areas that can have a name and other location-based properties. The application layer consists of end-user applications for accessing the location information. A precondition with Place Lab is the fact that a database with beacons’ positions must be available, which serves the beacons’ geographical location coordinates to client devices.
