The National Trust had experience in mapping using mobile geospatial technologies. As part of a three-year project aimed at better conserving their plants, trees, and vegetable collection, the Trust began using MobileMappers in 2008 to gather information about thousands of plants across 80 of their sites and catalog them using GPS. To map fence lines on Trust property and verify boundaries to delineate the end of National Trust ownership, an upgrade to their sub-meter accuracy technology was needed.