Data input method and device, dual-chip point-of-sale terminal and storage medium

The invention is suitable for the technical field of point-of-sale terminals, and provides a data input method and device, a double-chip point-of-sale terminal and a storage medium, and the method comprises the steps: enabling an application chip to enter a safety input mode when detecting a preset touch event, and obtaining target information of a preset double-click event when detecting the preset double-click event within a preset time period, and sending the target information to the security chip, receiving target data corresponding to the target information returned by the security chip, and uploading the target data to an application layer when it is detected that input is completed. According to the application, the touch data detected based on the touch screen is screened through the application chip, and only the detected target information is sent to the security chip for processing, so that the calculation amount of the security chip is reduced, the multi-point touch signal of the touch screen is