| 摘要 |
<p>A satellite navigation system comprises a database having a first category of data containing longitude values and latitude values and a second category data containing a plurality of individually owned names, where each individually owned name is associated with a longitude value and a latitude value. The database has a third category of data containing ownership details of an owner corresponding to said individually owned name and a further fourth category containing navigation data suitable to navigate a user to a point formed by said longitude and latitude values. The system may also have means for receiving and updating the longitude and latitude location of the owner who may also be able to upload information to the database themselves. Access to the data may be protected, e.g. by a PIN, and/or may be time sensitive, e.g. an owners location may only be available between certain times.</p> |
