FIGS. 8A-8C illustrate an interface assembly 100 which, in this case, includes a mechanical button or the like, being movable towards and away from the functional multilayer structure 20. FIG. 8C shows the interface assembly 100 as a perspective view on the side of the assembly 100 having at least a portion of the movable member 40 visible. FIG. 8C also shows the sections on A-A and B-B. FIG. 8A shows section on A-A and FIG. 5B section on B-B. Even if shown as being perpendicular relative to each other, this may not necessarily be the case.
FIG. 8A illustrates that at least one sensor 32 is arranged embedded into the molded material layer 26. The sensor 32 may be, for example, a Hall sensor or a Reed switch or a sensing coil for sensing a change in magnetic field. Therefore, when the movable member 40 is being pushed towards the multilayer structure 20, the sensor 32 detects change in the magnetic field. The same is true when the movable member 40 is moved away from the structure 20. Thus, the detection portion 42 is, preferably, a permanent magnet or a plurality of permanent magnets.