A flat device (100) sensor for use in measurements in a subject, the level sensing device a set of electromagnetic cell (112) near field detection comprising the sensor device comprising: an electromagnetic unit (110) nearfield detection comprising a surface (108) of detection whereby the device is adapted to be oriented towards a region of interest of the subject, said sensor surface layer (117) driving comprising a plurality of cells (112) comprising detection configured to define a set of regions (114) detection in a separate within said detection surface ratio, and the set of electromagnetic cells near field detection, each associated with one of said detection regions being surrounded detection regions by an electrically conductive (116) material of said conductive layer； and a flexible structure (120) signal transmission integrated with said electromagnetic unit near field detection in a coplanar configuration, so that the structure of signal transmission and the electromagnetic unit near field detection having at least one continuous surface common, said flexible transmission structure signals a first layer (125) including a set of connection lines signals associated with said detection cells and a second electrically conductive layer (126) is electrically coupled to said conducting layer comprising of the detection surface.Un dispositivo plano (100) sensor para su uso en mediciones en un sujeto, comprendiendo el dispositivo plano sensor un conjunto de células electromagnéticas (112) de campo cercano de detección, comprendiendo el dispositivo sensor: una unidad electromagnética (110) de campo cercano de detección que comprende una superficie (108) de detección mediante la cual el dispositivo está adaptado para estar orientado hacia una región de interés del sujeto, comprendiendo dicha superficie de detección una capa (117) de conducción que comprende una pluralidad de células (112) de detección configuradas para definir un conjunto de regiones (114) de detecc
