A Galaxy S4 video was circulated before. Although it was only made by foreign netizens according to the news spread, it still attracted many netizens' hot discussions. The most striking new feature should be the laser keyboard base. When the phone is placed on the base, a virtual laser keyboard will be projected on the table, Then users can use this keyboard to input text. Is this digital concept the future trend or the commercial gimmick of manufacturers?

Galaxy S4 Concept Video

IPhone Concept Keyboard

The keyboard, as the most convenient and fast instruction and data input device for our daily office work, has become increasingly indispensable, but its huge size has led to its lack of good portability. When we need keyboard input and want to carry it with us, it has become a problem that we cannot have both fish and bear's paw. So someone invented a laser keyboard to project laser light into a keyboard through a small device to replace the traditional physical keyboard. This concept seems to solve this problem, but is it really true? How does it feel in actual use?

Dell Classic 8115 Keyboard

After a long time of use, I found that there was no problem with the laser keyboard for data entry, but the input speed became its biggest problem. The reason why we needed this full-size keyboard was that it was fast and accurate, and the laser keyboard performed very poorly in both aspects, Even less than the small full keyboard of smart phones, what is the reason for this phenomenon? As we all know, the laser keyboard only projects a keyboard on the desktop through light, so it is actually untouchable. This is the reason why it lacks "feel". The reason why we can use ordinary keyboard to quickly input depends on the feel of the physical keyboard. If this feeling can not be fed back to us, Then we will have no idea, which will lead to frequent wrong or empty presses in the process of rapid entry. Of course, if you often train for a long time, you may be able to overcome this problem, but the difficulty is very high, the learning cost is also very high, and it is also difficult to popularize.

In fact, the original purpose of the laser keyboard was to solve the problem of carrying ordinary keyboards. However, although this kind of keyboard solved the problem of "looking", it failed to solve the problem of "touching". The idea of replacing the keyboard with light actually contradicts the indispensable feel of the physical keyboard, so the laser keyboard is just a short-lived product in the field of science and technology, It does not really serve our life.