Abstract: A method and system for secure package delivery utilizing digital signatures is described. In one configuration, data regarding the weight, dimensions and origination are cryptographically processed to create an authentication digital signature with message retrieval capability. The data is read and independently verified at the package destination.

Abstract: A method and system for electronic bill presentment and payment using a third party intermediary is described. A third party provides an electronic post office that uses a virtual address directory to provide a level of abstraction in an EBPP data stream using the ACH network so that EBPP participants do not require the information that is typically required to process such transactions. By using the virtual address directory, neither the biller, nor the bank, nor the intermediary have all the consumer data used in the transaction. Accordingly, privacy is enhanced and any risk that privacy will be compromised is reduced.

Abstract: A highly secure hand-held portable postage meter is disclosed that uses partially pre-printed postal tape. Only the date and postage amount remain to be printed on the tape by the meter. The postal tape, pre-printed by Postal Authority, is enclosed within the meter in a removable cartridge. In one embodiment, a new cartridge being pushed into the meter pushes the used cartridge out. An anti-tamper lock is released by a probe key, on the leading face of the cartridge, that couples with a receptor on the trailing face of the used cartridge.

Abstract: A safety system for detecting ice on the external surfaces of aircraft that are awaiting take-off from airports is disclosed. Multiple optical sensors mounted flush with the craft skin emit coded radiation signals away from the craft's skin. If a layer of ice is present on a sensor, light is reflected back to a corresponding detector, generating an electrical signal. Reflection from water or antifreeze or from environmental or endogenous noise yield distorted signals that are rejected by the code-reading circuitry. Relevant signals are sent to the cockpit, where the location of the ice on the aircraft is displayed for the crew, as well as to the airport tower via standard communication link, and to the flight data recorder. The invention assures that ice is detected at all critical times while the craft proceeds from the terminal to when it is airborne. Visual and audible alarms inform the pilot if unacceptable conditions prevail.

Abstract: A safety fringe is formed around the edge of paper products in order to reduce the likelihood of people receiving cuts. A softened and weakened fringe is formed by pressing a hard-surfaced mechanical member against a narrow strip near the edge of the paper. Many commonly-available machine parts are suitable for this purpose. A safety fringe can be formed at the mill or at any other stage in the processing or handling of paper.

Abstract: This invention relates to the adjustment of sound intensity (volume) from appliances which communicate audible information to users. Information carried by sound energy from an appliance competes with whatever audible noise is present in the listener's area. Some appliances have volume controls that let the user adjust sound intensity. These controls do not deal adequately with background noise that changes often, and which makes it necessary for the user to frequently reset the volume control. A setting of volume control that is appropriate at a quiet time, may make it impossible to understand a message when background noise becomes louder. Similarly, a volume control setting which is suitable when background noise is high may produce a message which is disturbingly loud when background noise is low.The present invention solves this problem of audio volume control by monitoring background noise in the listening area and automatically adjusting the sound level of the appliance accordingly.

Abstract: A board game for two or more players combines elements of strategy, knowledge of geography and chance in simulating the action of intelligence agents in performing assigned missions. The board surface is an unlegended map of the principal part of the world with unidentified target sites designated thereon. The map is marked with latitude parallels and longitude meridians at small intervals, e.g., 10.degree., the intersections forming a grid of spaces along which the playing pieces move. Random drawing of secret mission cards by each player assigns particular target sites to be reached by each player and the particular missions to be performed at the sites. The object of the game is to move the playing pieces to the assigned target sites by roll of dice, carry out the designated mission, and, if required, return to the starting point, at the same time trying to impede the progress of the other players.