Abstract: Systems, apparatuses, methods, and computer program products are disclosed for quantum entanglement authentication (QEA). An example method includes generating, at a second computing device, a second number based on a subset of a second set of entangled quantum particles associated with the second computing device. Each entangled quantum particle in the second set of entangled quantum particles may be entangled with a respective entangled quantum particle in a second set of entangled quantum particles associated with a second computing device. The example method further includes transmitting the second number to a first computing device. In some instances, the example method may further include authenticating a session between the first computing device and the second computing device in an instance in which the second number corresponds, or is identical, to a first number.

Abstract: A system for monitoring shopping baskets (e.g., baskets on human-propelled carts, motorized carts, or hand-carried baskets) can include a computer vision unit that can image a surveillance region (e.g., an exit to a store), determine whether a basket is empty or loaded with merchandise, and assess a potential for theft of the merchandise. The computer vision unit can include a camera and an image processor programmed to execute a computer vision algorithm to identify shopping baskets and determine a load status of the basket. The computer vision algorithm can comprise a neural network. The system can identify an at least partially loaded shopping basket that is exiting the store, without indicia of having paid for the merchandise, and execute an anti-theft action, e.g., actuating an alarm, notifying store personnel, activating a store surveillance system, activating an anti-theft device associated with the basket (e.g., a locking shopping cart wheel), etc.

Abstract: Apparatus for stacking sticks of split-firewood has a drum with interior flights as well as a ramp and chute which do not rotate with the drum. The flights partition the inside wall of the drum into a procession of shelves and pockets. Each shelf extends radially between the drum sidewall and an inner edge. The ramp is mounted inside the drum and has an axially extending upper edge disposed to be spaced by a small gap from the shelf edges at about 9 o'clock relative clockwise rotation of the drum. The chute is also mounted partly inside the drum slopes from a top to a discharge end. The chute is mounted relative to the ramp to form a catch zone for sticks sliding off the ramp inside the drum. The chute furthermore extends outside the drum to discharge sticks of split firewood in neat stacks there.

Abstract: A portable instrument combines an electronic distance or range finder with an electronic difference finder for vertical (i.e., elevational) angle mensuration in order to at least to determine or compute, from a remote distance away, a vertical clearance between a bridge overpass and an under-passing highway. The instrument is at least sighted manually on one of a bridge overpass or the under-passing highway, but instantaneously gives computed values once activated.

Abstract: An improved security door hinging system, wherein the door hinge comprises locking elements in the shape of circular posts on each hinge leaf. Lock engaging means in the form of apertures are located on the door and the door frame to engage the locking elements of the hinge. The locking elements and the lock engaging means cooperate when the door is in the closed position to secure the door to the door frame in the event the conventional mounting screws become inoperable, as when excessive force is applied to the door hinge area.