Abstract: A system for providing on demand responses to consumer impulses produced by a demand stimulus includes a computer processing system and content databases accessible by the computer-processing system having stored stimulus responses corresponding to a plurality of consumer demand stimuli in at least two categories of demand stimuli. A real-time inquiry response system associated with the computer processing system receives inquiries provided by a consumer and identifies the content category with which the consumer inquiry is associated. The computer processing system correlates consumer inquiries received by the real-time inquiry response system with stimulus responses stored in the content database based on the content category identified by the inquiry response system, so that the real-time consumer response system can return to the consumer, in real time, a stored stimulus response which correlates to the consumer inquiry.

Abstract: A system for providing demand responses to inquiries made by information consumers includes a database having a plurality of stored responses corresponding to inquiries made by an information consumer wherein each of the stored responses contains at least one stored item returnable to an information consumer in response to an inquiry. The returnable item of the stored response is of a preferred presentation media type that most effectively presents the returnable item. A real time inquiry response system receives inquiries submitted by information consumers from devices having a communications interface. Means are provided for correlating the consumer inquiries received by the real time inquiry response system with inquiry responses stored within the database.

Abstract: A device securely decrypts and writes an encrypted digital file to a local recordable storage medium. The device uses two decryption engines. The first decryption engine incrementally decrypts the encrypted digital file, which is then preprocessed and re-encrypted to form an intermediate file. The second decryption engine then incrementally decrypts the intermediate file and writes the decrypted results to a local recordable storage medium. Both decryption engines perform incremental decryption, such that substantially less than all of the digital file is in decrypted form at any instant. A device in accordance with a second embodiment includes a single decryption engine. The encrypted digital file includes individually encrypted portions, and the decryption engine incrementally decrypts the encrypted portions. These portions are buffered for subsequent writing to the recordable storage medium, but substantially less than all of the individually encrypted portions are stored in decrypted form at any instant.