1. A fastener apparatus comprising in combination: mechanical binding means engaging at least one substrate; microcomputing means integral with the mechanical binding means, the microcomputing means including a data storage device providing a capacity for receiving and transferring a quantity of digital data, a data processing device providing a capacity for calculation using the digital data, and a bi-directional data transfer port adapted for receiving the digital data for transfer to the data storage device and to the data processing device and for transferring the digital data from the data storage device and from the data processing device.