A proposed approach to evaluate the accuracy of tag-based location systems

Location detection systems that use tags are a popular means of determining a user’s location. These systems are characterised as requiring the user to carry an identity tag that is detected by sensors, which typically use some form of triangulation to determine location. Although estimates for precision for these systems are published by the respective manufacturers the customer experience can vary widely. This paper proposes an evaluation framework which will allow different systems to be compared more directly. This framework is specifically targeted at evaluating the experiences of tagging humans, which can cause particular difficulties due to the fact that many tag-based systems use communication frequencies that cannot pass easily through the human body.