A virtual keyboard can be defined as a computer software element that makes it possible for its customers to enter all the characters that are essential. It is a device that can be operated with the support of various input devices and these devices can include an actual laptop keyboard, a touch screen and also a computer mouse. There are many varieties of virtual keyboards. On a Pc, the most important objective of utilizing 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 own an on- screen keyboard.
A virtual keyboard can be used commonly as an on screen input method in the devices that do not have any physical keyboard. In backlit mechanical keyboard there is actually no space for a physical keyboard such as a personal digital assistant, a pocket personal computer, touchscreen and a tablet pc. The text is inputted frequently by tapping the keyboard or through finger tracing. These kinds of keyboards are also utilised as characteristics of the emulation computer software for the systems that have a great deal fewer buttons when compared to a personal 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 many keypads.
• The virtual keyboards can have the touchscreen keyboard layouts and also the sensing regions.
• The layouts of the optically projected keyboard or the similar arrangements of the keys and sensing locations.
• The optically detected finger motions and also human hand.
• These keyboards can also permit the input from a selection of other input devices such as a switch, laptop or computer mouse and also other assistive technologies devices.
These keyboards can be put to effective use in order to lessen the expanding threat of the crucial stroke logging. For example there are solutions that use a virtual keyboard for the purpose of entering a password. This use of a virtual keyboard makes it hard for the malware to monitor the display and the mouse to acquire the information that has been entered via the keyboard. The use of a particular on screen keyboard on which the user can form with the support of mouse clicks can raise the risk 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 types of keyboards a natural achievement.