Microsoft first introduced ToggleKeys with Windows 95. The feature is also used in later versions of Windows.
ToggleKeys can be enabled by pressing and holding the Num Lock key for 5 seconds. This feature can also be turned on and off via the Accessibility or Ease of Access icon found either in the Control Panel2 or from within the Settings app.
Novak, Mark; Vanderheiden, Gregg C; Hinkens, Jay; Schauer, Joseph; Borden, Peter A (December 1994). "Development of extensions for standard computers and operating systems to allow access by users with motor impairments". Journal of Rehabilitation Research and Development. 30–31: 145. ProQuest 215284816. /wiki/ProQuest ↩
Colmer, Rebecca Sharp; Thomas, Todd M. (2006). The Senior's Guide to Computer Tips and Tricks: Windows XP, Internet Explorer, Microsoft Word, and Outlook. EKLEKTIKA, Inc. p. 55. ISBN 978-0-9765465-2-8. 978-0-9765465-2-8 ↩