Abstract: A smartcard includes contact pads for electrical connection to an external power source for provision of power to the smartcard in a contact mode of the smartcard, a contactless power harvesting system for provision of power to the smartcard in a contactless mode of the smartcard, and a main circuit on-board the smartcard for receiving and managing the power provided from the contact pads or from the contactless power harvesting system, where the main circuit includes components requiring power in order to provide the smartcard with required functionality, and where the main circuit is connected to the contact pads via a current limiting circuit for controlling the levels of current drawn via the contact pads, the current limiting circuit having an integrator.

Abstract: A smartcard (102) comprises contact pads for electrical connection to an external power source for provision of power to the smartcard in a contact mode of the smartcard; a contactless power harvesting system (108, 126) for provision of power to the smartcard in a contactless mode of the smartcard; and a main circuit on-board the smartcard for receiving and managing the power provided from the contact pads or from the contactless power harvesting system wherein the main circuit includes components requiring power in order to provide the smartcard with required functionality; and wherein the main circuit is connected to the contact pads via a current limiting circuit (C) for controlling the levels of current drawn via the contact pads, the current limiting circuit comprising an integrator.