Why do sticky keys exist?

Related questions

1. What is Ghosting a computer?
2. Do you want to turn on Toggle Keys pop up?
3. What does it mean when he ghosts you?
4. How many wpm can I type?
5. What causes ghosting?
6. What function key restores factory settings?
7. Do you need to type fast to be a programmer?
8. Can a gaming keyboard be used as a regular keyboard?
9. Why does Sticky Keys keep turning on?
10. How fast should programmers type?

Tags

1. #active
2. #pressing
3. #modifier
4. #instead
5. #keystrokes
6. #allowing
7. #remain
8. #serializes
9. #multiple
10. #shift
11. #pressed
12. #other
13. #release
14. #until
15. #windows
16. #press