Zero Touch: Next Generation Multi-Touch System

Zero Touch: Next Generation Multi-Touch System

Now a days the popularity of touch product is increasing. Zero Touch (ZT) is a unique optical sensing multi touch technique which allows real time sensing of fingers, hands and other objects. It detects more than 20 fingers at the same time. It is a new technology which enables free air interaction. It can convert any conventional such as big TV screen into multitouch surface. It is highly efficient and cost effective also. 

                                                                                                               Zero Touch

Instead of using cameras, here use individual infrared sensor and LEDs which covers the entire screen and provides the complete information about the interactive area. This sensing technique called point to point sensing. The complete perspective of interactive area is shown in the below figure.  Each LED is activated individually.At the same time all receivers are activated. The complete area is surrounded with infrared sensors and LEDs.Thus the complete interactive area is generated.

Zero Touch is a open frame like structure  which can be placed above computer screen or hang in the air. This frame is connected to the computer with USB. This frame contains individual modules. Each module consists of 8 infrared light receivers and one infrared LED. The sensors are commercially available sensors which is used in the television remote controls. It creates a series of invisible light which crosses the entire screen. If something touched the screen, then these beams are interrupted. The system software calculate the size,shape location and movement of objects and then applied to the computer screen. Thus free air interaction is possible by placing the zero touch sensor frame before the screen.It can easily convert any display into multitouch panel by simply connecting this frame like structure on the conventional display.The cost is very less when comparing with conventional techniques for producing a multi touch screen.

Applications of Zero Touch

• IntangibleCanvas:- By using this the user can draw pictures using  fingers,hand, elbows and other objects inside the frames.
• Pen in hand commands :- It is a real time game played using multitouch.
• Artpiles :- It is a pen interactive application. Its a curatorial tool for museums. It is used to organize large collections,helps to form ideas about exhibition etc..

Advantages of Zero Touch

• Zero Touch used as open air interface.
• Ease of integration with existing LCD displays.
• It work with both fingers and styli.
• It can track more than 20 obtects simultaneously.
• No force is required to activate the sensor.
• Tracking is possible even with gloved hands.

Disadvantages of Zero Touch

• Occlusion issues
• Shadowing problems
• Activation feed back issues