In an embodiment, a foldable device having a sensor is described. In an embodiment, the device comprises: A folding area, wherein the folding area is configured to rotate according to an axis of rotation caused by folding the device, causing deformation of the folding area. The folding area comprises: a layer of strain sensitive material having particles, wherein conductivity of the strain sensitive material is configured to change when the layer experiences the deformation. The folding area comprises a layer of conductor lines configured to detect the change of the conductivity of the strain sensitive material, wherein the layer of the conductor lines includes a plurality of contacting points with the strain sensitive material.