Multitouch: what is it?
Multitouch is an opportunitytouch screens to respond simultaneously to several touches. The option of multitouch is now supplied almost all modern smartphones and tablets. It is used for the most part to increase the scale of the image, as well as for the comfortable organization of the game process for two or more players. In this article I will tell you in more detail about what a multitouch is.
Multitouch - how does it work?
Multitouch is, above all, a special devicedisplay. What is a multitouch screen? This is a glass panel with a resistive layer applied over it. At the corners of the display are placed four electrodes, and between them there is a certain alternating voltage. When the finger touches the screen, a leakage current occurs, changing the voltage parameters, which allows you to determine the touch point and perform the action desired by the user.
Multi-touch or touch screen?
It is believed that the touch screen can recognizeone touch of the user, and multitouch - a few. Actually, this is the difference between these two types of screens. Strictly speaking, multitouch is a special case of the touch screen. However, technically creating a multi-touch screen, of course, involves a more complex organization of the mechanism of touch recognition.
Multitouch - the main functions
The most common multitouch options are:
- enlarge the image - push apart the fingers;
- reduce the image - move your fingers;
- scroll - move several fingers alternately;
- Rotate the object - rotate with two fingers.
Multitouch - advantages
Touchscreen is considered the most comfortableway to control the device, and multitouch, in fact, expanding the capabilities of the touch screen, of course, raises the bar of comfort to a new level and, in addition, slightly extends the capabilities of the device. As an example, it's worth mentioning about the game Cut the Buttons, where two players simultaneously control each one with their scissors on one screen.
In addition, multitouch helps to combatinconvenience of managing large screens. Many smartphones today have too big diagonals and reach for some buttons is sometimes extremely inconvenient, and multitouch in some situations eliminates the need to use a particular button. For example, on the iPhone, to exit the photo view mode, you need to press the touch button "Back", but it is located in the upper left corner - not very comfortable for the user. Multi-touch allows you to close the photo by sliding your fingers.
In multi-touch, according to the creator of sensoryscreens of Jeff Hahn, a great future: in particular, multitouch will become very popular when huge screens for demonstrating, for example, working projects will become a common practice.
More about modern technologies, see the sections Technique and Tablets.
