Abstract: An accelerated transparent authenticated Data Exchange system wherein the chronology of alternating senders' and receivers' messages are authenticated typically at each step, with an easy to use provision for resending, in the event of faulty transmission, such that the final message hash value authenticates the negotiation chronologically from first to final message, wherein the final hash value is operative to enable a signature of an entity or entities which binds such entity to the whole data exchange, which signature can be in clear text, encoded, and/or encrypted with authentication integrity. The system is useful for managing computerized negotiations including client-initiated computerized negotiations and including computerized financial transactions.

Abstract: A computerized venue management system for managing a venue serving clients, the system comprising a multiplicity of portable computing devices each associated with a loyalty rating representing a client of the venue; a plurality of computerized delivery terminals each capable of communicating with and serving any one of the multiplicity of portable computing devices wherein at least a subset of the plurality of terminals is operative to enable delivery of at least one Loyalty based entitlement to at least one client of the venue and, in conjunction with delivery of the at least one entitlement, to enhance the individual portable computing device's loyalty rating, wherein the entitlement is computed to encourage more even distribution of clients over time by weighting at least one client's entitlement positively as a function of presence of the client's portable computing devices at the venue at times of lesser client attendance.