Although there is voice-recognition software built into Windows 7, there are also widely used packages for sale that offer excellent accuracy and even complete "hands-free" use. For example, Nuance's Dragon NaturallySpeaking (for information, see the software producer's Dragon NaturallySpeaking webpage) and, formerly, IBM's ViaVoice (no longer supported).
These and similar software packages can be very powerful options for people who are not able to use a physical keyboard or mouse, or who just want to speed up their text input. The systems take time to "train" to recognize the speaker, but with practice, it is possible to input text faster than the fastest typist.
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