A virtual keyboard can be defined as a software element that allows its customers to enter all the characters that are necessary. It is a device that can be operated with the help of various input devices and these devices can include things like an actual computer keyboard, a touch screen and also a computer system mouse. There are different varieties of virtual keyboards. On a Pc, the primary purpose of working with a virtual keyboard is to deliver a definite option for an input mechanism for the users that have disabilities or for the users who do not personal an on- screen keyboard.

A virtual keyboard can be employed usually as an on screen input method in the devices that do not have any physical keyboard. In such devices there is truly no space for a physical keyboard such as a private digital assistant, a pocket laptop, touchscreen and a tablet computer system. The text is inputted usually by tapping the keyboard or via finger tracing. These varieties of keyboards are also employed as options of the emulation software for the systems that have a lot fewer buttons when compared to a computer keyboard. The categories of virtual keyboards have been explained below.

• The physical keyboards that have distinct keys can comprise the electronically changeable displays in the several keypads.

• The virtual keyboards can have the touchscreen keyboard layouts and also the sensing regions.

• The layouts of the optically projected keyboard or the related arrangements of the keys and sensing areas.

• The optically detected finger motions and also human hand.

• These keyboards can also permit the input from a range of other input devices such as a switch, computer system mouse and also other assistive technologies devices.

These keyboards can be place to successful use in order to cut down the growing danger of the key stroke logging. For instance there are solutions that use a virtual keyboard for the goal of getting into a password. This use of a virtual keyboard makes it challenging for the malware to monitor the display and the mouse to acquire the information that has been entered by way of the keyboard. backlit mechanical keyboard of a certain on screen keyboard on which the user can type with the enable of mouse clicks can boost the threat of any password disclosure by shoulder surfing. Thus there are some security challenges that will need to be taken into consideration in order to make these forms of keyboards a all-natural achievement.