Methods and systems for packet-by-packet directional mobile wireless transmission utilizing plurality of directional antenna sectors, such that, the transmission of each packet is performed by at least one selected antenna sector. The integrated circuit includes an inductive or capacitive wireless communication structure located on a die region of the integrated circuit. Information of makers that have manufactured optical disc drives, drive maker keys of each maker and flags indicating whether drive keys are valid or not is included in association with each other in the key locker. One monitor enables the threshold to increase when the network is uncongested, enabling the sender to increase its transmission rate. Configuration settings of a portable data reader may be updated by detecting whether a storage device having a set of updated configuration settings stored thereon has been coupled to the portable data reader and, if so, updating one or more configuration settings on the portable data reader with one or more of the updated configuration settings from the storage device.