Why can sausage cucumber operate touch screen?

As people continue to develop the functions of sausages and cucumbers, some users have discovered that these meat products and fruits can also control the touch screen of smartphones. Why can they control capacitive screens? To understand why they can control capacitive screens, we first need to understand the working principle of capacitive screens. Capacitive touch screen technology works by using the current induction of the human body. The capacitive touch screen is a four-layer composite glass screen with four electrodes drawn out from the four corners. When a finger touches the metal layer, due to the human body's electric field, the user and the touch screen surface form a coupling capacitor, so the finger draws a very small current from the contact point. This current flows out from the electrodes on the four corners of the touch screen, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller obtains the position of the touch point by accurately calculating the ratio of these four currents. Taking sausage as an example, its outer membrane and the meat or flour inside can also form a capacitor. When you hold it in your hand, the bioelectric field on your hand is also loaded on it, thereby forming a coupling capacitor. In fact, not only cucumbers and sausages, but most fruits and meat products can control the screen of a smartphone or tablet based on this principle.

As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity.

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