Electrically conductive apparatus obviates the need for a traditional fencing “Mask Cord” while still permitting a satisfactorily resilient connection between a conventional electric fencing Mask and a target vest/jacket (“Lame”), and offers many advantages including “effortless” connectivity and positioning—in a preferred embodiment, situated between a conventional fencing Mask Bib and Lame—whereby enhanced safety is achieved during play by making the Mask even harder to tip upwards, thereby reducing the chances for injury due to neck exposure.

An Internet of Thing (IoT) device includes a sensor coupled to a processor; and a transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A conductive material of a plurality of separate conductive materials are coupled to a first participant, the conductive material configured to move when the first participant delivers an impact to a second participant. An impedance-based impact sensing mechanism including an impedance changing mechanism that changes impedance as the conductive material is moved towards and away from the impedance changing mechanism as the first participant delivers the impact. An impedance-based impact measuring scoring system determines that the impact occurred based on a change in impedance in the impedance changing mechanism.

An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A fencing target assembly for practicing fencing includes a stand that has a plurality of hinged members. The stand is positionable in a deployed position having each of the hinged members defining a respective leg of a triangle such that the stand can be vertically oriented on a support surface. The stand has a track that is integrated into a respective one of the hinged members. A plurality of targets is each attachable to the stand having each of the targets placed at a variety of locations on the stand. In this way each of the targets can facilitate a user to practice fencing maneuvers. Each of the targets has a penetrable element to facilitate a fencing foil to penetrate the penetrable element.

A fencing target assembly for practicing fencing includes a stand that has a plurality of hinged members. The stand is positionable in a deployed position having each of the hinged members defining a respective leg of a triangle such that the stand can be vertically oriented on a support surface. The stand has a track that is integrated into a respective one of the hinged members. A plurality of targets is each attachable to the stand having each of the targets placed at a variety of locations on the stand. In this way each of the targets can facilitate a user to practice fencing maneuvers. Each of the targets has a penetrable element to facilitate a fencing foil to penetrate the penetrable element.

An Internet of Thing (IoT) device includes a body with a processor, a camera and a wireless transceiver coupled to the processor.

There is provided herein circuitry and methods for applications including touch detection and, in embodiments, low rate communication such as for secure device authentication. The method uses a circuit having a first device having a first pair of unconnected plates and an edge source coupled therebetween. The circuit further comprises a second device having a second pair of respective unconnected plates and a charge sensor coupled therebetween. The method for touch detection comprises applying at least one differential edge between the first pair of unconnected plates using the edge source and detecting touch by coherently (i.e. in time) sensing an imbalance in a near field channel formed between the plates and an output signal of the charge sensor. The present method/circuit has various applications including for touch detection in fencing and secure device authentication employing both touch detection and bidirectional cryptographic communication between key and secure devices.

A practice sword for practicing martial arts includes a sword hilt body, a blade portion, and a guard portion that separates the sword hilt body and the blade portion. The practice sword is configured such that the sword hilt body and the blade portion have a vinyl chloride pipe as a common core. The blade portion is formed by surrounding the outer surface of the common core vinyl chloride pipe with styrene foam, arranging an elastic cushioning material on a distal surface thereof, and accommodating the styrene foam and the vinyl chloride pipe in a thin and long thick cloth bag. The sword hilt body is formed by abutting top and bottom rod-like pieces of wood against the top and bottom peripheral surfaces of the common core and winding a string around the surfaces of the top and bottom rod-like pieces of wood.