Geocoin

[1] Many of these are made to be trackable on various websites to be able to show the movement around the world[2] and visitors to be able to leave comments when they find the coin.

Icons will also remain in the inventory of cachers who log the 'discovery' of a geocoin's number without physically removing it from a cache.

[10] It is not uncommon for activated, released geocoins to go missing, whether because a cacher is unfamiliar with the logging and tracking process or due to outright theft.

[12][13] In 2012, a geocoin helped authorities return stolen items to a geocaching enthusiast in Seattle, who marked the coins as missing online.

[14] The goods were found in a storage unit during a raid and the geocoins became instrumental in connecting the burglars to their crime.

The Ginormous Geocoin is 46 inches in diameter, made of cast iron spray-painted GOLD, and weighs about 115 pounds.