You can manage your keyboard shortcuts using the new accessibility settings page.
You can choose to disable "character key shortcuts". This turns off keyboard shortcuts that only use single characters like s, g c, and . (the period key). Shortcuts which make use of modifier keys like command and control are not affected by this setting.
This feature prevents accidental triggering of keyboard shortcuts. This is important for people who use a keyboard and for people who use assistive technologies like voice input.