A platform unit for detecting a parameter selected from the group consisting of pressure, temperature, humidity and a combination thereof, the platform unit comprising: (a) a plurality of sensors comprising metallic nanoparticles capped with an organic coating "MCNPs"; (b) at least one substantially flexible substrate; (c) at least one substantially rigid substrate; and (d) a plurality of electrodes; wherein the plurality of sensors comprise: (i) at least one pressure sensor comprising a layer of MCNPs being deposited on the substantially flexible substrate and a top-cover film which is configured to block the pressure sensor from generating a signal in response to a change in humidity, wherein the pressure sensor is configured to sense pressure applied thereon and to generate an electrical signal in response thereto, and (ii) at least one of a. a humidity sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate, wherein the humidity sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in humidity and generate an electrical signal in response thereto, and b. a temperature sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate and a top-cover film which is configured to block the temperature sensor from generating a signal in response to a change in humidity, wherein the temperature sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in temperature and generate an electrical signal in response thereto, the plurality of sensors thereby providing the detection of pressure, temperature, humidity or their combination. (a) a plurality of sensors comprising metallic nanoparticles capped with an organic coating "MCNPs"; (b) at least one substantially flexible substrate; (c) at least one substantially rigid substrate; and (d) a plurality of electrodes; wherein the plurality of sensors comprise: (i) at least one pressure sensor comprising a layer of MCNPs being deposited on the substantially flexible substrate and a top-cover film which is configured to block the pressure sensor from generating a signal in response to a change in humidity, wherein the pressure sensor is configured to sense pressure applied thereon and to generate an electrical signal in response thereto, and (ii) at least one of a. a humidity sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate, wherein the humidity sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in humidity and generate an electrical signal in response thereto, and b. a temperature sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate and a top-cover film which is configured to block the temperature sensor from generating a signal in response to a change in humidity, wherein the temperature sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in temperature and generate an electrical signal in response thereto, (i) at least one pressure sensor comprising a layer of MCNPs being deposited on the substantially flexible substrate and a top-cover film which is configured to block the pressure sensor from generating a signal in response to a change in humidity, wherein the pressure sensor is configured to sense pressure applied thereon and to generate an electrical signal in response thereto, and (ii) at least one of a. a humidity sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate, wherein the humidity sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in humidity and generate an electrical signal in response thereto, and b. a temperature sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate and a top-cover film which is configured to block the temperature sensor from generating a signal in response to a change in humidity, wherein the temperature sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in temperature and generate an electrical signal in response thereto, a. a humidity sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate, wherein the humidity sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in humidity and generate an electrical signal in response thereto, and b. a temperature sensor comprising a layer of MCNPs being deposited on the substantially rigid substrate and a top-cover film which is configured to block the temperature sensor from generating a signal in response to a change in humidity, wherein the temperature sensor is configured to exhibit a change in conformation of the MCNPs in response to a change in temperature and generate an electrical signal in response thereto,