A computer system for generating data structures for information retrieval of documents stored in a database. Upon initialization of a scanner, the sensor head is moved rapidly to quickly detect a known pattern at a known location in the scanner. Some of the embodiments permit a user to take a snapshot of data stored on the file system. In one embodiment, the adjusted bit rate is used for communications on the data link when a confirmation bit pattern is received within a predetermined time after the data is received. The methods include using biopolymers or their synthetic equivalents combined with a stable source of reactive oxygen species that when applied to or combined with a separate source of oxido-reducing enzyme or catalyst will cause the formation of an activated biopolymer with increased protein binding affinity and microbial control activities.