A touch-sensitive device comprising: - a planar waveguide comprising a first waveguide layer, a touch-surface being arranged at the first waveguide layer, and at least one edge comprising a first edge, - at least one redirecting structure comprising a first redirecting structure arranged at the first edge, - at least one dispersion structure having a first dispersion structure and a second dispersion structure, - a first light source adapted for emitting a first light towards the first dispersion structure such that said first light is dispersed in the planar waveguide towards the first redirecting structure, and adapted for emitting a second light and a third light towards the second dispersion structure such that said second light and said third light is dispersed in the planar waveguide towards the at least one redirecting structure, and - at least one detector device comprising a first detector device adapted to detect first, second and third light from the first light source, the planar waveguide being adapted for guiding said first light along a first primary path towards the first detector device, the first primary path comprising at least one active part and at least one passive part, the at least one active part of the first primary path comprising a first active part being within the first waveguide layer, the planar waveguide being adapted for guiding said second light along a second primary path towards the first detector device, the second primary path comprising at least one active part and at least one passive part, the at least one active part of the second primary path comprising a first active part being within the first waveguide layer, the first active part of the second primary path intersecting the first active part of the first primary path at a primary zone of intersection, the planar waveguide being adapted for guiding said third light along a third primary path towards the first detector device, the third primary path comprising at least one active part and at least one passive part, the at least one active part of the third primary path comprising a first active part being within the first waveguide layer, the first active part of the third primary path intersecting the first active part of the first primary path and the first active part of the second primary path at the primary zone of intersection, wherein the touch sensitive device is adapted such that light in the active parts (32, 42, 52) is sufficiently disturbed by a touch at the touch surface for provision of a touch coordinate, and adapted such that light in the passive parts (34, 44, 54) is sufficiently undisturbed by a touch at the touch surface for no provision of a touch coordinate, and wherein one of the first and second dispersion structures is adapted for generation of light with an active angle range in relation to the touch surface needed for making parts of the first, second and third primary paths being active parts in the planar waveguide, and the other of said first and second dispersion structures is adapted for generation of light with a passive angle range in relation to the touch surface needed for making parts of the first, second and third primary paths to be passive parts (34, 44) in the planar waveguide. - a planar waveguide comprising a first waveguide layer, a touch-surface being arranged at the first waveguide layer, and at least one edge comprising a first edge, - at least one redirecting structure comprising a first redirecting structure arranged at the first edge, - at least one dispersion structure having a first dispersion structure and a second dispersion structure, - a first light source adapted for emitting a first light towards the first dispersion structure such that said first light is dispersed in the planar waveguide towards the first redirecting structure, and adapted for emitting a second light and a third light towards the second dispersion structure such that said second light and said third light is dispersed in the planar waveguide towards the at least one redirecting structure, and - at least one detector device comprising a first detector device adapted to detect first, second and third light from the first light source,