In response to the recent change in Apple’s tracking approval requirements, Germany-based Sponsormob has adapted its system to track apps through the use of an encrypted hash of the device’s MAC (Media Access Control) address. This tracking method replaces that of tracking the device’s UDID, its “Unique Device Identifier” or serial number.

Sponsormob recently opened a sales office in Austin, Texas. The U.S. base of operations will focus on expanding the client base and management of current North American clients. Founded in 2006, Sponsormob is a leading provider of mobile advertising in Europe working with clients around the world. The company has grown from a staff of three in 2009 to twenty-five full-time employees today and has doubled its profitability year on year since its founding.