A method for preparing ethanol-containing nanolipid particles, which can be used in food products, frozen desserts, or beverages. A trigger signal is transmitted to the client system in response to an event relevant to the location information of the client system. The CSC code is correlated with a received signal to find a candidate peak. Color data of a pixel occupied by the detected inspection object is compared with color data of a non-defective inspection object which is previously prepared to judge whether or not the inspection object is defective. The device is suitable in particular for UART circuits that are present in microcontrollers. , soap, lotion, or perhaps ketchup or other sauces in a restaurant environment, to drain from the container without waste or extraordinary efforts to access the last few measures of liquid from the container.