Customer service hotline:
Mobile phone version
Two-dimensional code
As long as the customer presses the "dynamic sort" button on the lower interface, the 0-9 number keys on the LCD screen can be arranged in no order. Eliminate the hidden danger of leaks and prevent the possibility of criminals guessing the customer's password from hand gestures.
Restricted viewing area
Use liquid crystal features to limit the visible area of the screen. Users can see the numbers on the LCD screen within a vertical Angle of 40 degrees to 150 degrees, and the efficiency of side viewing or looking outside this Angle is zero. Successfully prevent peeping Tom from stealing passwords.
