Geohashing
| A geohashing app, converting the day's date and the Dow Jones Industrial Average into a set of coordinates | |
| Highest governing body | geohashing wiki | 
|---|---|
| Nicknames | Hashing | 
| First played | 2008 | 
| Registered players | 800 | 
| Characteristics | |
| Contact | No (except where two hashers agree to a local variant) | 
| Team members | Varies, usually solo | 
| Mixed-sex | Yes | 
| Type | Outdoor or indoor, aquatic | 
| Equipment | Satellite navigation device or map with latitude/longitude or other grid markings and compass; other equipment may be useful | 
| Glossary | glossary | 
| Presence | |
| Country or region | Worldwide | 
| Olympic | No | 
| World Championships | No | 
| Paralympic | No | 
| World Games | No | 
Geohashing /ˈdʒiːoʊˌhæʃɪŋ/ is an outdoor recreational activity inspired by the webcomic xkcd, in which participants have to reach a random location (chosen by a computer algorithm), prove their achievement by taking a picture of a Global Positioning System (GPS) receiver or another mobile device and then tell the story of their trip online. Proof based on non-electronic navigation is also acceptable.
The geohashing community and culture is extremely tongue-in-cheek, supporting any kind of humorous behavior during the practice of geohashing and resulting in a parody of traditional outdoor activities. Navigating to a random point is sometimes done with a goal in mind. Some geohashers document new mapping features they find on the OpenStreetMap project, clean up litter, or create art to commemorate the trip, among other activities.
A variation on geocaching, known as geodashing, features a closely comparable principle, with participants racing between coordinate points.