A system includes a view screen with polarized output. The view screen may include a projected view screen or writing-surface view screen. A window capable of blocking the polarized output at least in part cloaks the view screen to frustrate viewing of the view screen through the window. In some cases, the window includes an array of panels capable of blocking multiple polarizations. The array may disrupt multiple different polarized view screen outputs while maintaining transparency to unpolarized light. In some cases, the window capable of blocking polarized output may be paired with view screen cover that converts view screen output in an unblocked polarization to one of the one or more polarizations blocked by the window.

A writing board system includes a writing device and a board having a powder coating substrate and a thermosetting powder coating resin applied to the powder coating substrate. A method includes preparing the powder coating substrate and spraying the thermosetting powder coating resin applied to the powder coating substrate.

A writing board system includes a writing device and a board having a powder coating substrate and a thermosetting powder coating resin applied to the powder coating substrate. A method includes preparing the powder coating substrate and spraying the thermosetting powder coating resin applied to the powder coating substrate.

A auto rolling and erasing board system comprises a board; a motor; a first roller being positioned proximate to one side of the board; a second roller being positioned proximate to opposite side of the board, said second roller capable of being rotatably driven by the motor; a flexible sheet connected to the first and second roller across the board; an adjustable eraser bracket configured to slide toward and away from the flexible sheet; and a pair of side brackets supporting the board, the motor, the first and second rollers and the adjustable eraser bracket, wherein upon activation of the motor, the second roller is rotatably driven to rotate the first roller, thereby causing the flexible sheet to rotate across the board.

A auto rolling and erasing board system comprises a board; a motor; a first roller being positioned proximate to one side of the board; a second roller being positioned proximate to opposite side of the board, said second roller capable of being rotatably driven by the motor; a flexible sheet connected to the first and second roller across the board; an adjustable eraser bracket configured to slide toward and away from the flexible sheet; and a pair of side brackets supporting the board, the motor, the first and second rollers and the adjustable eraser bracket, wherein upon activation of the motor, the second roller is rotatably driven to rotate the first roller, thereby causing the flexible sheet to rotate across the board.

A garment having an outer surface not designed for writing has at least one rewritable area comprising a layer of rewritable material deposited directly onto a selected region of the outer surface. One or more permanent artworks may be deposited onto the garment prior to deposit of the rewritable layer, which may be contiguous or non-contiguous. A stencil is provided for allowing a user to write on rewritable areas while protecting adjacent areas of the garment. In one method for forming the rewritable area, a first portion of a permanent artwork and a second portion of the permanent artwork are successively deposited on the garment, followed by curing the permanent artwork and depositing a rewritable area on the garment.

An apparatus and kit for interactive training within a rail system. The apparatus includes a table board illustrating generalized rail system lines. User pieces are provided for placement on the table board during interactive training. The user pieces are customizable via labels provided on one or more adhesive sheets.

The disclosure discloses a method for erasing a writing path on an infrared electronic white board, the method including: adding data points to a writing path to obtain a complete writing path in which the distance between any two adjacent data points is no more than an erasing distance corresponding to a selected erasing mode; determining an erasing area according to an input erasing path and the erasing mode; and erasing those data points on the complete writing path, which lie in the erasing area.

The disclosure discloses a method for erasing a writing path on an infrared electronic white board, the method including: adding data points to a writing path to obtain a complete writing path in which the distance between any two adjacent data points is no more than an erasing distance corresponding to a selected erasing mode; determining an erasing area according to an input erasing path and the erasing mode; and erasing those data points on the complete writing path, which lie in the erasing area.

An interactive high-clarity glass electronic whiteboard having a writing board body; the writing board body includes a base board and an ultra-thin tempered glass. The front of the base board attaches with the ultra-thin tempered glass. The attaching surface of the ultra-thin tempered glass attaching the base board is adhered with a non-transparent interlayer. A non-transparent coating is adhered to an attaching surface of the ultra-thin tempered glass attaching the base board A writing surface of the ultra-thin tempered glass is a matte surface with anti-glare treatment.