What you need to know Apple's Indoor Mapping Data Format (IMDF) has been adopted by the Open Geospatial Consortium (OGC) as a Community Standard. Apple positions its format as a way to offer indoor mapping while preserving privacy and security. Apple's Indoor Mapping Data Format (IMDF), which the company uses to offer indoor maps through its Apple Maps service, has been adopted by the Open Geospatial Consortium (OGC) as a Community Standard. The company announced the news in an update on the Apple Developer website. It offers a mobile-friendly, compact, human-readable, and highly extensible data model for any indoor space, providing a basis for orientation, navigation, and discovery. And now, the Open Geospatial Consortium (OGC) membership has added IMDF 1.0.0 to the OGC Standards Baseline as a Community Standard.