A simple geotagged SMS might look like:
which would contain the message I'm at the pub and a location with latitude 37.801631 degrees south, longitude 144.980294 degrees east, and an uncertainty of (+ or -) 10 metres.
Messages using GeoSMS can also contain multiple locations, for example:
which contains two locations.
GeoSMS is used by the free Android application I Am Here (available through the Google Play) to send and receive geotagged SMS messages. It displays received messages using either a compass or map view. The GeoSMS specification is also being used to allow ships and cruising vessels to send position updates from an SMS-capable satellite phone, such as one of the recent models marketed by Iridium Communications or Globalstar.4
The Open Geospatial Consortium also has an approved Open GeoSMS standard, published in 2011. This standard has been broadly implemented in Asia. The OGC Open GeoSMS standard was originally developed in Taiwan by ITRI in 2008 and submitted into the OGC in 2009.
"Now, geotag SMS to help friends locate you". Times of India. 2010-10-01. Retrieved 4 October 2010. http://timesofindia.indiatimes.com/tech/personal-tech/computing/Now-geotag-SMS-to-help-friends-locate-you/articleshow/6664495.cms ↩
"Researchers Develop Location-Enabled SMS Standard, Launch Android App". New York Times. 2010-10-01. Retrieved 4 October 2010. https://www.nytimes.com/external/readwriteweb/2010/10/01/01readwriteweb-researchers-develop-location-enabled-sms-st-43195.html ↩
Mayrhofer, A.; Spanring, C. (2010-06-08). "RFC 5870 - A Uniform Resource Identifier for Geographic Locations ('geo' URI)". Internet Engineering Task Force. doi:10.17487/RFC5870. Retrieved 10 September 2010. {{cite journal}}: Cite journal requires |journal= (help) http://tools.ietf.org/html/rfc5870 ↩
Sending GeoSMS position updates from offshore through a satellite phone http://squidd.io/faq#follow ↩