Abstract: A system and method are disclosed for rendering published documents tamper evident. Embodiments render classes of documents tamper evident with cryptographic level security or detect tampering, where such security was previously unavailable, for example, documents printed using common printers without special paper or ink. Embodiments enable proving the date of document content without the need for expensive third party archival, including documents held, since their creation, entirely in secrecy or in untrustworthy environments, such as on easily-altered, publicly-accessible internet sites. Embodiments can extend, by many years, the useful life of currently-trusted integrity verification algorithms, such as hash functions, even when applied to binary executable files. Embodiments can efficiently identify whether multiple document versions are substantially similar, even if they are not identical, thus potentially reducing storage space requirements.

Abstract: Systems and methods are disclosed which enable more accurate examination of medical diagnostic images, for example x-ray, ultrasound and magnetic resonance imaging (MRI) images. The systems and methods highlight anomalies that have changed between the collection times of two or more diagnostic images, and can also provide objective scoring of the degree of change.

Abstract: Systems and methods are disclosed which enable more accurate examination of industrial diagnostic images, for example x-ray, ultrasound and terahertz camera images. The systems and methods highlight anomalies that have changed between the collection times of two or more diagnostic images, and can also provide objective scoring of the degree of change.

Abstract: Systems and methods are disclosed for enhancing anti-terrorism public safety measures, by more securely determining whether explosives or other contraband have been inserted into notebook computer batteries or other large, replaceable subsystems of electronic devices. Because notebook computers typically require large, heavy batteries, they present attractive containers for smugglers and terrorists attempting to bring explosives onto an airplane. The disclosed security testing system provides more reliable results than many current tests, and does not require that the device under test be powered on. The systems and methods disclosed use out-of-band authentication for added security.

Abstract: Piston-in-cylinder type shock absorbers are disclosed that are compressible to less than half of their extended length, thereby eliminating the current need for automotive suspensions to accommodate unwieldy shock absorbers that, even when fully compressed, must be longer than the amount of permitted axial suspension travel at the shock absorber's connection point. Since the disclosed shock absorbers are super-compressible, they are also super-extendable, which is extendable beyond double their compressed length. In some embodiments, this super-compressibility and super-extendibility are rendered possible by the use of a rigidly interleaved, oppositely-oriented, axially-balanced, free-floating bank of gas-charged cylinders.

Abstract: A system and method are disclosed for rendering published documents tamper evident. Embodiments render classes of documents tamper evident with cryptographic level security or detect tampering, where such security was previously unavailable, for example, documents printed using common printers without special paper or ink. Embodiments enable proving the date of document content without the need for expensive third party archival, including documents held, since their creation, entirely in secrecy or in untrustworthy environments, such as on easily-altered, publicly-accessible internet sites. Embodiments can extend, by many years, the useful life of currently-trusted integrity verification algorithms, such as hash functions, even when applied to binary executable files. Embodiments can efficiently identify whether multiple document versions are substantially similar, even if they are not identical, thus potentially reducing storage space requirements.

Abstract: Systems and methods are disclosed for enhancing anti-terrorism public safety measures, by more securely determining whether explosives or other contraband have been inserted into notebook computer batteries or other large, replaceable subsystems of electronic devices. Because notebook computers typically require large, heavy batteries, they present attractive containers for smugglers and terrorists attempting to bring explosives onto an airplane. The disclosed security testing system provides more reliable results than many current tests, and does not require that the device under test be powered on. The systems and methods disclosed use out-of-band authentication for added security.

Abstract: Systems and methods are disclosed for enhancing anti-terrorism public safety measures, by more securely determining whether explosives or other contraband have been inserted into notebook computer batteries or other large, replaceable subsystems of electronic devices. Because notebook computers typically require large, heavy batteries, they present attractive containers for smugglers and terrorists attempting to bring explosives onto an airplane. The disclosed security testing system provides more reliable results than many current tests, and does not require that the device under test be powered on. The systems and methods disclosed use out-of-band authentication for added security.

Abstract: Systems and methods are disclosed which enable more accurate examination of industrial diagnostic images, for example x-ray, ultrasound and terahertz camera images. The systems and methods highlight anomalies that have changed between the collection times of two or more diagnostic images, and can also provide objective scoring of the degree of change.

Abstract: A system for restricting operation of wireless devices, for example cell phones, comprises a controller and a plurality of sensors. The system restricts device usage, while permitting emergency phone calls, for example 911 calls. The sensors receive transmissions from devices, and use the transmissions for identification and determining whether a device is within a restricted zone. One disclosed method is triangulation, using time of arrival of transmissions at the sensors. If the device is within the zone, the controller sends device identification, and possibly a customized restriction request, to a remote node, for example a control node of a cell phone network operator. The operator then uses its network resources to implement the requested restrictions. Communication between the controller and the remote node is secure, possibly encrypted, to minimize malicious interference. A wireless control can define vertices of the zone and exempt certain devices from restrictions. Jamming is not required.

Abstract: Systems and methods are disclosed which enable more accurate examination of medical diagnostic images, for example x-ray, ultrasound and magnetic resonance imaging (MRI) images. The systems and methods highlight anomalies that have changed between the collection times of two or more diagnostic images, and can also provide objective scoring of the degree of change.

Abstract: A method of managing a software license comprises loading a software program into volatile memory, obtaining authorization data, modifying a portion of the volatile memory relied upon by the program in accordance with the authorization data, executing the program, and causing the modifications to be deleted from the volatile memory. In some embodiments, selection criteria compared with the authorization data does not contain information corresponding to all of the content of the authorization data, thereby denying a software attacker the benefit of identifying and exploiting the selection criteria.

Abstract: A system is described that simultaneously (1) provides for at least 10 different height adjustments for assisted pushups; (2) provides an adjustable ankle-holding situp bar to accommodate differently-sized feet; (3) can compensate for an uneven exercise surface; (4) requires no permanent mounting or any installation; (5) does not require use of a doorway; (6) is highly compact for storage; (7) can be disassembled for storage using a trivial procedure that is already well-known by most gym users; (8) leverages existing, widely-used and inexpensive home gym equipment to provide some portions of the system, thereby reducing expense; and (9) can be used as a weight for some barbell exercises, thereby stretching the home gym user's money; and (10) can be used as a weight plate on a weight bar for weightlifting exercises, thereby further stretching the home gym user's money. Alternative systems are also described.

Abstract: Systems and methods are disclosed which enable the establishment of file dates and the absence of tampering, even for documents held in secrecy and those stored in uncontrolled environments, but which does not require trusting a timestamping authority or document archival service. A trusted timestamping authority (TTSA) may be used, but even if the TTSA loses credibility or a challenger refuses to acknowledge the validity of a timestamp, a date for an electronic document may still be established. Systems and methods are disclosed which enable detection of file duplication in large collections of documents, which can improve searching for documents within the large collection.

Abstract: Systems and methods are disclosed which enable more accurate examination of medical diagnostic images, for example x-ray, ultrasound and magnetic resonance imaging (MRI) images. The systems and methods highlight anomalies that have changed between the collection times of two or more diagnostic images, and can also provide objective scoring of the degree of change.

Abstract: A system and method are described for rendering Compact Discs (CDs) and Digital Video Discs (DVDs) unreadable. Embodiments comprise a frame, a guide for constraining motion of the frame with respect to a disc, and at least one scraping element. Scraping elements may be positioned to damage the disc volume descriptor while the frame moves in a constrained manner relative to the disc. The guide may comprise a spindle which engages the center hole of a disc to hold the frame in a radially-fixed position. A scraping element on the frame damages the disc as the disc rotates relative to the frame. The guide may be integrated, such that the frame comprises a slot through which the disc passes. A scraping element inside the slot damages a disc as it passes through. Embodiments are hand operated, not motorized, and some have no moving parts. Embodiments also function with non-optical media.

Abstract: An authentication method, system and device are provided to continuously collect dynamic personal identification data (DPID) samples through a user device by using one or more sensors to continuously collect biometric and location data samples associated with the user and then securely transfer the DPID samples to a central authentication server where attributes of the DPID samples may be captured and incorporated as part of a challenge-response pair which requests an arbitrarily generated N-tuple of the DPID samples from a predetermined time interval from the user device that is unique to the user and dynamic based on the sensed data and the time-interval of collection.

Abstract: A system for restricting operation of wireless devices, for example cell phones, comprises a controller and a plurality of sensors. The system restricts device usage, while permitting emergency phone calls, for example 911 calls. The sensors receive transmissions from devices, and use the transmissions for identification and determining whether a device is within a restricted zone. One disclosed method is triangulation, using time of arrival of transmissions at the sensors. If the device is within the zone, the controller sends device identification, and possibly a customized restriction request, to a remote node, for example a control node of a cell phone network operator. The operator then uses its network resources to implement the requested restrictions. Communication between the controller and the remote node is secure, possibly encrypted, to minimize malicious interference. A wireless control can define vertices of the zone and exempt certain devices from restrictions. Jamming is not required.

Abstract: A method of managing a software license comprises loading a software program into volatile memory, obtaining authorization data, modifying a portion of the volatile memory relied upon by the program in accordance with the authorization data, executing the program, and causing the modifications to be deleted from the volatile memory. In some embodiments, selection criteria compared with the authorization data does not contain information corresponding to all of the content of the authorization data, thereby denying a software attacker the benefit of identifying and exploiting the selection criteria.

Abstract: A system is described that simultaneously (1) provides for at least 10 different height adjustments for assisted pushups; (2) provides an adjustable ankle-holding situp bar to accommodate differently-sized feet; (3) can compensate for an uneven exercise surface; (4) requires no permanent mounting or any installation; (5) does not require use of a doorway; (6) is highly compact for storage; (7) can be disassembled for storage using a trivial procedure that is already well-known by most gym users; (8) leverages existing, widely-used and inexpensive home gym equipment to provide some portions of the system, thereby reducing expense; and (9) can be used as a weight for some barbell exercises, thereby stretching the home gym user's money; and (10) can be used as a weight plate on a weight bar for weightlifting exercises, thereby further stretching the home gym user's money. Alternative systems are also described.