Key:source:geometry

Use the source:geometry=* tag to indicate the source of the geometry of objects added to OpenStreetMap. "Geometry" in this case means the shape and position of a node or way. If added to a way, there is no need to add the tag to the individual nodes that make up the way.

• This tag is especially useful when an object's geometry has been imported as it helps to keep a record of where the original data came from.
• The tag can also be used when tracing from aerial imagery, however you may wish to add a source to the changeset instead (which several editors, like iD, already have a place to add it).

Keep in mind that the current recommendation is to add source tags to the changeset instead of individual objects. For more information, see the Key:source page.

For tagging sources of other non-geometry information see source=*.

Other versions of this tag are used for the same purpose:

source:position=*
source:shape=*
source:outline=*
source:area=*
source:footprint=*

How to map

Main article: Key:source

Values and usage are pretty much same as with source=* key:

• source:geometry=Bing + source:geometry:date=2012 — object was traced from Bing'12 imagery. Please note that Bing imagery date is not the same date when you trace it!
• source:geometry=survey + source:geometry:date=2014-11 — you can use current date if you place objects based on current information and your personal observations in OSM.