This communication presents an overview on our activities on the development of printed sensors on flexible polymeric foil for RFID. We are envisioning the direct printing of sensors on different types of products such as smart labels and RFID tags. This technology could bring sensors where there is no sensor at the moment by significantly reducing their production cost and by adding new functionalities. The integration of these sensors fabricated on plastic foil with electronics, communication and powering capabilities will be addressed. The realization of cost-effective smart objects can be one of the key enabling technologies for the deployment of the Internet of Things (IoT).