Why do ATM machines use stainless steel keyboards

In our daily life, the most common keyboard is made of plastic, but we can see the stainless steel keyboard in ATM or some self-service devices.

This kind of keyboard feels not very good when pressed, it is harder than ordinary keyboard, with high elasticity, lack of flexibility and slow input speed, but why still choose this keyboard?

ATM, as a machine used in public places, is used by different groups of users, each of whom has a different input operation mode, and also has a high or low quality. Maybe when he is in a good mood, he will use it normally, but when he is upset, he may use it more violently, or even deliberately destroy it. Therefore, to protect the service life of the keyboard and reduce the maintenance cost of ATM, metal keyboard is a good choice.

After we press the button, there is a temperature difference between the finger and the button, which will cause heat conduction. The temperature of the key changes after we press it. If you use a thermal camera, you can see which keys have been pressed. Ordinary plastics have low heat conduction efficiency and hold the temperature for a long time, which increases the risk of password leakage. But stainless steel is not the same, fast conduction, temperature change is fast, it is difficult to catch press the keys, not easy to be a person steal password.

stainless steel metal keyboard is waterproof, dustproof, explosion-proof, anti-drilling, anti-demolition, anti-leakage, anti-eavesdropping, anti-replacement key, procedures, sensitive data unpacking self-destruct