| 摘要 |
The disclosed system and method for automated proximity determination and notification is useful to enable a customer or client of a business or other enterprise (e.g. a public library, a government facility, etc) to automatically obtain a predetermined service, on arrival at a destination associated with the business or enterprise, without having to communicate orally with representatives of the business/enterprise. A portable programmable wireless communication device is carried by users of such services. The device, termed a PLAD (pervasive location aware device), receives a program and proximity notification parameters associated with each destination to be visited, when service is reserved relative to the destination. Thereafter, as its user travels to the destinations, the PLAD is activated and uses the program information and parameters acquired in the reservation process to perform a proximity notification transmission characteristic of this invention as the device reaches a predetermined range of proximity to a destination. For that purpose, the PLAD calculates its distance to each currently valid destination at which a service is reserved, and sends a proximity notification signal to an address associated with a respective destination when its distance to the respective destination is less than a predetermined threshold radius limit acquired during the reservation process. Receiving equipment at the address uses the proximity notification signal to arrange for prompt execution of a reserved service when the user of the PLAD arrives at the respective destination. The PLAD also can be used in a reverse context-when its user is at a specific location and the service is being delivered to that location by a vehicle carrying another PLAD operated by or for a business/enterprise-to alert the user to the imminent arrival of that vehicle. |
