# Adding background maps

Add background information to your map to provide context for the other data in the map.

Unlike other linked map files, items in background maps cannot be selected.

To configure any of the supported map background sources, tap in the Map toolbar and select Layer manager. In the Layer manager, select the Map files tab and then tap the appropriate softkey.

Supported sources of map background information are:

- Trimble Maps

  Trimble Maps is the simplest option for providing map backgrounds if the controller is typically connected to the internet.

  Trimble Maps requires no configuration and is available with any Trimble Access controller that has a current Trimble Access Software Maintenance Agreement or to any user who has a valid Trimble Access subscription.

  See Trimble Maps.

- Web map service (WMS)

  Create a web map in Trimble Access by providing the URL to a web map service (WMS) and view data provided by the service in the Trimble Access map.

  To view the data provided by the WMS, the controller must be connected to the internet.

  See Web maps.

- Web map tile service (WMTS)

  Create a web map in Trimble Access by providing the URL to a web map tile service (WMTS) and view data provided by the service in the Trimble Access map.

  When working offline, you can use map data from the WMTS in the Trimble Access map for up to 7 days, but you will be able to zoom or pan only to the same data as when the controller was connected to the internet.

  See Web maps.

- Web feature service (WFS)

  Create a web map in Trimble Access by providing the URL to a web feature service (WFS) and view georeferenced vector data from the WFS in the Trimble Access map.

  In Trimble Access, save the data as a .wfs file so that you can use the data in the field without an internet connection.

  See Web maps.

- Image

  Link to your own background image file stored on the controller. This option does not require an internet connection.

  See Background image files.