Pinpointing the place of origin of a cellular phone emergency call using active RFID tags

摘要

When police, fire or ambulance personnel receive an emergency call, they must pinpoint its place of origin in order to respond quickly. When such a call is made from a cellular phone, its place of origin can be determined by using GPS or a cell-based positioning method. However, these methods are sometimes inaccurate and have blind spots. We developed a system for determining location using RFID-reader-equipped cellular phones and RFID tags. We outline the prototype system here.