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geocache
Geocaching
Geocaching is an outdoor recreational activity, first played in May 2000, [ 2 ] in which the participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", anywhere in the world. A typical cache is a small waterproof container containing a logbook where the geocacher enters the date they found it and signs it with their established code name. Larger containers such as plastic storage containers ( Tupperware or similar) or ammunition boxes can also contain items for trading, usually toys or trinkets of little value. Geocaching shares many aspects with benchmarking , trigpointing , orienteering , treasure-hunting , letterboxing , and waymarking . [ edit ] History Geocaching was originally similar to the 150-year-old game letterboxing , which uses clues and references to landmarks embedded in stories.Geotag information in a JPEG photo, shown by the software gThumb Geotagging (also written as GeoTagging ) is the process of adding geographical identification metadata to various media such as a geotagged photograph or video, websites, SMS messages, QR Codes [ 1 ] or RSS feeds and is a form of geospatial metadata . This data usually consists of latitude and longitude coordinates , though they can also include altitude , bearing , distance, accuracy data, and place names. Geotagging can help users find a wide variety of location-specific information. For instance, one can find images taken near a given location by entering latitude and longitude coordinates into a suitable image search engine .
GeoTagging
<a href="http://adserver.adtechus.com/adlink/3.0/5159/425846/0/16/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" target="_blank"><img src="http://adserver.adtechus.com/adserv/3.0/5159/425846/0/16/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" border="0" width="1" height="1"></a> by Julian Bleecker 06/07/2005 Editor's note: Julian Bleecker heads the Mobile Media Lab (MML), a near-future think tank and research and development lab at the University of Southern California. In today's article, Julian describes a design approach for location-based services utilized in many of the projects under way at MML.
O'Reilly Network -- A Design Approach for the Geospatial We
<a href="http://adserver.adtechus.com/adlink/3.0/5159/425846/0/16/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" target="_blank"><img src="http://adserver.adtechus.com/adserv/3.0/5159/425846/0/16/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" border="0" width="1" height="1"></a> by Mike Liebhold , contributor to O'Reilly's upcoming Mapping Hacks 05/10/2005 Editor's note: In this article, Mike Liebhold writes about what we need to do to tap the as yet unharvested business opportunities in a geospatial web. This is just the type of topic we'll be exploring at the O'Reilly conference Where 2.0 , coming to San Francisco in late June.
