A portable consumer device, system for authenticating a consumer laptop, and mu00e9tados to use the portable consumer device and to authenticate a transaction.

摘要

A portable consumer device, system for authenticating a consumer laptop, and methods for using the portable consumer device and to authenticate a transaction. Achievements of the invention provides a portable consumer device configured to store data of aut Enticau00e7u00e3o dynamic memory.The portable consumer device also includes an interface to transmit data and receive energy from an external device. The authentication data are read from the dynamic memory for a read-write device located on the portable consumer device.The authentication data are updated, and the updated data can be written in the memory using the device to read and write. In some achievements, an authentication value read from memu00f3ia can be used to generate another authentication value based on an algorithm.The device is further configured to transmit the portable consumer authentication data to an external device. The process of reading, updating, to generate, transmit and rewriting the authentication data may occur each time the external power is provided to the portable consumer device via the interface.The energy to generate the components of the portable consumer device may be taken exclusively from the energy received from the external device (that is, energy extrena). In some achievements, a portion of the external energy can be stored temporarily in a storage medium device of portable energy consumer.