Patent ID: 8274407

Claim:
A device for selection of symbols, selected from characters or icons, comprising: a matrix carrying a plurality of sensors split into a first group of sensors having function of choice and at least a second group of sensors associated each to a limited number of said symbols; an activation member of said sensors, adapted to slide relative to said sensors in order to be brought at least partially in coincidence with one of said sensors thus producing a corresponding selection signal; a selection key which can be operated manually for bringing in turn said activation member to select a first sensor belonging to said first group and then a second sensor belonging to said second group, said sensors being distributed on said matrix according to modular zones, comprising a central zone and radial sector zones angularly equidistant or non-equidistant, the sensors of the first group being located in a passageway between said central zone and each of said radial sector zones, and the sensors of the second group being located within said radial sector zones; and means for guiding, at least partially, said selection key for determining the relative movement of said activation member with respect to said sensors, said means for guiding comprising edges in relief of said radial sector zones, said sensors of said second group being on said edges in relief, wherein the device is configured to be operated without looking at the motion the selection key follows operated by action of a finger.