CN2454809Y - Secret-leakage-proof device for keyboard - Google Patents

Abstract

The utility model relates to a code-leakage-proof device when a keyboard is operated, which uses antipeep glass at both the left side and the right side, and a rear bracket is surrounded by a baffle plate at back and is fixed on the keyboard, wherein the antipeep glass is assembled and stuck by some tablet glass, the periphery of which is frosted. When a hand extends into and operates the keyboard, eyes can view the keyboard in a vertical direction, but others who view from the sides can not see the keyboard clearly for the influence of frostings of glass, so codes can be protected from leakage.

Description

The keyboard leakage prevention device

The utility model relates to a kind of leakage prevention device, and especially a kind of computer cipher input unit prevents the device that other people or the optics system of spying on snatch password when operation.

Computer is extensive use of at industry-by-industry, and present computer is in operating process, and its keyboard is disclosed, and the digital other people of key entry can see that not having maintains secrecy can say.For the industry of some needs to be keep secret, especially,, reveal the economic loss that causes because of password and happen occasionally because closely packed in the air is put such as the PIN PAD of systems such as bank, securities broker company.According to national post system general bureau statistics, 1999 annual postal saving business are revealed password during because of user's operator password and are caused damage and surpass hundred million yuans.

It is a kind of simple in structure that the purpose of this utility model is to provide, and operates simple and easyly, and the effective keyboard leakage prevention device of maintaining secrecy especially provides a kind of computer cipher input unit to prevent the device that other people or the optics system of spying on snatch password when operation.

The scheme that the utility model purpose realizes is: the keyboard leakage prevention device that is provided be with anti-spy on glass in its left and right sides and the back surround with baffle plate that after-frame is solid to be constituted on keyboard, the wherein anti-glass of spying on is to form by some peripheral frosteds or through assembly unit of transparent material piece or stickup that the coating processing forms opaque shape.The utility model is to design according to optical principle.Because the anti-glass of spying on is opaque by some peripheries that are processed into, but upper and lower surface still keeps the assembly unit of material transparent piece to paste to form, when from the anti-glass front of spying on when vertically looking down, the transparent area up and down by the transparent material piece can be clear that anti-all of glass back of spying on.Simultaneously, because of transparent material piece periphery is opaque shape, in the anti-glass front of spying on when tilting to certain angle slightly and looking down, the opaque periphery of material block just produces optical distortion, cause the anti-object of spying under the glass smudgy, make the eyes or the optics system of spying on of operator's unrelated person at one's side can't enter operating gesture and the process that visual range is spied on the operator, be stolen thereby stop password.

The utility model is at present the most frequently used cipher inputting keyboard size specification, the used anti-glass blocks of spying on is pasted and is formed by some 3 ± 2 millimeters * 3 ± 2 millimeters, thick 5 ± 3 millimeters meticulous assembly unit of transparent material piece, and the anti-glass of spying on that this kind specification is assembled into has preferable effect.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the anti-structural representation of spying on glass blocks of the utility model.

Fig. 3 is that the utility model constitutes the anti-transparent material block structure synoptic diagram of spying on glass blocks.

Device embodiment illustrated in fig. 1 is supporting in PIN PAD use commonly used.As Figure 1-3, this installs cover type, and the end face of cover cap is anti-to spy on glass 1, and the left and right sides and back surround with plastic dam 2, and positive front is left actuation holes 4 and stretched out one's hand for operators and enter manipulation keyboard 3.The anti-glass 1 of spying on that this device adopted is by 2,000 3 millimeters * 3 millimeters, and thick 5 millimeters little glass material piece 5 is pasted into 120 millimeters * 150 millimeters specifications as shown in Figure 2 through tight assembly unit).The upper and lower surface printing opacity of little glass material piece 5 is transparent, and all the other four sides all become opaque shape through frosted.According to optical principle as can be known, 3 millimeters * 3 millimeters, thick 5 millimeters glass material piece 5 maximum incident angles are 30 ° of central vertical line, because it is no longer transparent after the peripheral frosted of glass material piece 5, causing going into the visual angle by the anti-maximum of spying on 1 in glass that the little glass material piece 5 of polylith is assembled into also is 30 degree, be light beyond central vertical line 30 degree of every little glass material piece 5 or sight line can only directive through glass material piece 5 sides of frosted, can't enter keyboard 3, thereby reach the anti-effect that other people snatch password.

Claims (2)

1. keyboard leakage prevention device, it is characterized in that with anti-spy on glass (1) in its left and right sides and the back surround after-frame with baffle plate (2) and consolidate on keyboard (3), actuation holes (4) is left in the front, and wherein anti-to spy on glass (1) be by some peripheral frosteds or handle (5) assembly unit of transparent material piece or the stickup that form opaque shape through coating forms.

2. according to the described keyboard leakage prevention device of claim 1, the specification that it is characterized in that transparent material piece (5) is 3 ± 2 millimeters * 3 ± 2 millimeters, thick 5 ± 3 millimeters.

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