Abstract: The present invention generally relates to a method for authenticating a user of an electronic device comprising a fingerprint sensor. The method comprises acquiring a sequence of verification images. Estimating, based on the images a first and a second verification force value indicative of a force applied by the object on the fingerprint sensor when the verification images were acquired. A verification image representation and a verification force value forms a verification template for each of the first and second images and forces. Matching the first and second verification template with at least one of a plurality of stored fingerprint enrolment templates in a respective first and second matching step. When the first and second matching steps each results in a positive match between the respective verification template and a respective one of the plurality of stored fingerprint enrolment templates, providing a signal indicating successful authentication of the user.

Abstract: A multiprocessor system for receiving and processing data packets includes a host processor, at least one client processor, and a memory accessible to the at least one client processor. The host processor is programmable to analyze a received data packet, and based thereon to obtain information on at least one codebook needed to process additional data and to generate at least one codebook packet. The at least one client processor is programmable to receive the at least one codebook packet and additional data and to use information in the received codebook packet to unpack the additional data. The memory is controlled by the host such that information in the received codebook packet is selectively stored by the client processor in the memory. The host processor is also programmable to analyze, based on the data packet, the information used by the at least one client processor.