Why do we need to add a sliding cover to the fingerprint lock?

The sliding cover is primarily designed for aesthetic purposes. Secondly, protecting the fingerprint window: The sliding cover can protect the fingerprint reader and password keyboard from aging caused by wind, rain, direct sunlight, or human scratches. With the sliding cover, the fingerprint reader and password keyboard have a longer lifespan and are more durable to use. Thirdly, it is convenient to power on: a fingerprint lock with a sliding cover, which can be pushed up to power on, making it convenient, fast, and efficient. At the same time, it reduces the number of times the password keyboard is used, thereby extending its service life. The fourth comfortable feeling: the sliding cover also satisfies some people's small hobbies. The sliding cover of the fingerprint lock is smooth and comfortable, and the feeling of pushing up cannot be described with good words, it must be said to be cool! The pleasure of pushing the lid is like the pleasure of pinching potato chips... (Reminder: pinching potato chips that you didn't buy with your own money is not right)