G.I.S. (Geographic Information Systems) are being consistently used for computerising data and surveys on land by municipalities, provinces, regions, superintendent bodies and international organisations. They often resort to these computer systems for a clear and constantly updated picture of the areas under their management, in order to plan and carry out suitable works (if necessary).

All information contained in G.I.S. refers necessarily to their location, and they can be analysed individually or according to their position in the space, or else in numerical or alphanumerical format. Besides, it is possible to exploit completely all data to work out synoptic layouts, diagrams and thematic maps.

G.I.S. may apply to any lot of land, regardless of its extension, and all data are normally displayed by vector graphics representing any kind of structure or infrastructure located on a specific area. These data can then be integrated with other information in any textual or graphic format.

In general, information systems can be connected to specific limited areas, such as buildings, museums, records offices, archaeological sites, town centres, and all other cases where space is one of the research criteria for positioning the elements that must be computerised. Consequently, special and customised management systems are created for any specific need. It is important to remind that G.I.S. are also being used increasingly by organisations and institutions planning operations to clear certain areas from explosive devices.