Smartcard

A method for manufacturing a smartcard, the method comprising:

• providing contact pads for electrical connection to an external power source for provision of power to the smartcard in a contact mode of the smartcard;
• providing a contactless power harvesting system for provision of power to the smartcard in a contactless mode of the smartcard;
• and
• providing 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 for controlling the levels of current drawn via the contact pads, the current limiting circuit comprising an integrator.