(GPS) global positioning system

I always thought this was a mapping and navigation system. 

I've learned it is a generalized location system. In other words it gets you in the general area of a location. The systems that claim to pinpoint a location are as good as the data they use. For example looking for a physical address GPS will get to an area.  Finding the location is dependent on specific and accurate data.  It because obvious there is a problem when comparing delivery services. The USPS find addresses, UPS finds addresses. FedEx, Wal-Mart, and the numerous delivery services rely solely on GPS apps that get them into the general area. Even ignoring the posted address numbers for a physical address. The delivery service will leave a package in the general area.  The fine tuning falls into the not my job, not my problem. Corporations will only communicate with the public through the court system. Delivery problems will continue in areas that don't have clarified coordinates.