Systems, methods, and articles of manufacture for protecting personal data in digital and physical worlds in which the personal data of a networked computing system is used for physical world communications. Preauthorized permissions or rules of a computing system specify how personal data of a first user, as a user that will receive a mailer, can be used by a different, second user to communicate with the first user in the physical world by sending the first user a mailer. The mailer may be a greeting card is generated and includes personal data (such as recipient name and address) to be sent to the receiving user, but the sender is not provided with the receiving user's personal data such that the sending user may not know the receiving user's address or even the receiving user's real name.

A method and apparatus for generating a Value Bearing Indicium (VBI) for on-line ticketing applications. A VBI may be generated by hashing user information to create a message digest that is used to create a digital signature. The digital signature is combined with the user information to create a VBI that can be validated by a variety of stand-alone or on-line methods. An on-line ticketing application using the VBI is described.

A method and apparatus for generating a Value Bearing Indicium (VBI) for on-line ticketing applications. A VBI may be generated by hashing user information to create a message digest that is used to create a digital signature. The digital signature is combined with the user information to create a VBI that can be validated by a variety of stand-alone or on-line methods. An on-line ticketing application using the VBI is described.

Methods and systems consistent with the present invention provide a barcode image. A client is operable to create a request for a barcode image and send the request to a server. The request comprises data to be converted to a barcode. The server is operable to receive the request from the client via a network, generate a barcode image from the data, and encode the barcode image. Thereafter, the server provides the encoded image to the client.

A method and apparatus for generating a Value Bearing Indicium (VBI) for on-line ticketing applications. A VBI may be generated by hashing user information to create a message digest that is used to create a digital signature. The digital signature is combined with the user information to create a VBI that can be validated by a variety of stand-alone or on-line methods. An on-line ticketing application using the VBI is described.

Methods and systems using a single centralized database to manage postal accounting data are provided. The central database may interface with remote postal meters by way of one or more transient data collectors, which cache data from associated meters and transmit the data to the central database. The data collectors also validate postage accounts to the associated meters. The use of local transient data collectors allows for a single centralized database to be used without requiring data replication among databases local to each computer that manages postal meters.