3SOUND is a personal navigation solution that integrates acoustic binaural technologies (3D sounds) and GNSS technologies to guide people along a predefined track. The system provides acoustic track perception based on the integration of an augmented acoustic reality application developed for smartphones and an accurate, reliable navigation solution that leverages GPS augmented with EGNOS/EDAS. The system identifies the position and orientation of the user and, using binaural sounds, improves on conventional waypoint or route navigation by providing innovative acoustic guidance via open earphones. The 3SOUND solution also includes a virtual guidance rope for the blind, others with sight impairments, and people working in low-visibility environments (emergency and rescue services, etc). The idea is being developed under the FP7 ARGUS project, which is designing, implementing, and demonstrating a personal navigation solution based on 3D sounds and acoustic track perception.