Geocaching: Retrieving / Grabbing a Trackable Item (Geocoin or Travelbug) page

If someone has mailed/given you a trackable item, or if you have found a trackable item, you will need to virtually “grab it” from its current holder (owner) before placing it in a different geocache.

We also have instructions for how to drop off a trackable item.

Log in to

Navigate to “Trackable Items”


Trackable items can be searched by clicking the 'trackable item' option on the left side of the homepage


Enter the tracking code (stamped on the coin) into “Enter the Tracking Number of the Item:” or the enter the item name into “Search …

Geocaching: How to Drop Off a Trackable Item (Geocoin or Travelbug)

Geocaching often involves items in a cache that are considered trackable. These items have alpha-numeric codes that are located on the item. Most trackable items are called “travel bugs” or “geocoins” and have engraved numbers on their surface. If you have a trackable item or find one in a cache, the idea is to bring it to another cache and drop it off. That way, the item can move from location to location. As long as you log and report …

Learning Lesson – Understanding Accuracy and Precision with GPS (Garmin Map60cx)

General GPS Lesson – Exploring the Accuracy of Recreational Grade GPS Units

Instructional Information
GPS UNIT Level Menus/Pages
Garmin GPSmap 60cx Basic Find, Map, Compass

Summary: GPS accuracy and precision is always a topic of interest. This exercise is designed to demonstrate the level of accuracy and precision you can expect with recreational grade units.

Discussion: A general assumption with GPS units is that they can lead you to the exact location of a place, or that you can mark …

Position Dilution of Precision (PDOP)

A unitless figure of merit expressing the relationship between the error in user position and the error in satellite position. For most purposes and GPS receivers, PDOP values considered good for positioning are small, such as 3. Values greater than 7 are considered poor.…

Adventures of the Map@Syst Geocoin

Map@Syst Geocoin Participation

Response to the Map@Syst geocoin was overwhelmingly positive! The geocaching community stepped forward and responded to the call to collectively participate in spreading the word about eXtension resources.

Over 125 coins were sent to 12 countries! Coins are traveling quickly from Cache to Cache. Several have specific goals and missions assigned by the community. We would like to highlight some of the coin travels here and share some of the coin stories.

If you want to see …

Map@Syst Geocoin Adventure

Join the Map@Syst Community of Practice Geocoin Adventure!

The Map@Syst Geocoin Adventure The Map@Syst Community of Practice would like to invite you to join in our geocaching challenge! We’ve created a series of trackable geocoins that are hidden around the country (and maybe the World). The goal of this adventure is to spread the word about eXtension and the resources available to the public. The Map@Syst Community of Practice is supporting this effort through a fun and entertaining geocaching adventure.…

GPS Applications in Crop Production

Image:Ae1264p1.jpgGPS and Agriculture

GPS Applications in Crop Production

John Nowatzki, Extension Geospatial Specialist
Vern Hofman, Extension Ag Engineer
Lowell Disrud, Assistant Professor
Kraig Nelson, Graduate Student

The Global Positioning System (GPS) provides opportunities for agricultural producers to manage their land and crop production more precisely. Common names for general GPS applications in farming and ranching include precision agriculture, site-specific farming, and prescription farming. GPS applications in farming include guidance of equipment such as sprayers, fertilizer applicators, and tillage implements to …