Touch screen information input method for smart device and smart device itself

A touch screen information input method, configured for visually impaired user to input information on a touch screen of a smart device, wherein the smart device includes a touch screen and a security chip, and an outer edge of the touch screen of the smart device is provided with a positioning device for user touch sensing, the outer edge of the touch screen including:

• left and right edges set along a horizontal direction of the touch screen when the smart device is in normal use, and the upper and lower edges set along a vertical direction of the touch screen, characterized in that the touch screen is gridded into grid units arranged along the horizontal and vertical directions, each grid unit uniquely corresponding to a virtual key, the virtual key including information keys for inputting information and function keys for processing the input information, and the information keys are arranged in rows along the horizontal direction and in columns along the vertical direction;
• the touch screen information input method comprising the following steps:
• step 1:
• after the application software on the smart device calls the SDK interface of the smart device, it enters information input mode, and the user can start inputting information;
• step 2:
• with the help of the positioning device, the user takes the positioning device as a starting point to perform a first touch slide along a horizontal direction on the touch screen, and performs a second touch slide along a vertical direction on the touch screen;
• step 3:
• through the intersection of the row of the information key where the first touch slide is located and the column of the information key where the second touch slide is located, the security chip uniquely determines the grid unit where the intersection is located, thereby uniquely determining an information key corresponding to the grid unit, and using the content of the information key as a current input information;
• step 4:
• the user performs a feedback operation on the current input information cross locked in step 3 to complete the input of the current input information, then, the security chip stores the current input information input by the user and sends a first perception signal to the user to indicate that the user has completed the input of the current input information;
• step 5:
• repeat steps 2-4 above until the user completes all information inputs through a function key and exits the information input mode.