Autofill functions to complete browser forms without the user needing to type it in full. It fills in fields automatically based on what users have typed in previously. 

Windows/Mac

Safari

1. Click on Safari in the menu bar
2. Click on preferences in the drop down
3. Click on the tab that says autofill
4. Untick all the boxes in there

Chrome

1. Click the chrome menu icon. (Three dots at the top right of the screen)
2. Click on settings
3. In the "Autofill" section, expand the area of which you wish to disable Autofill (in this case it would be all of them).
4. Toggle the setting OFF if it is ON. The system will automatically save your changes.

Edge

1. Click on the three dots in the top right hand of the screen.
2. Click on settings at the bottom of the list
3. Scroll down and click on the advanced settings button
4. Toggle off the switch for "Save Form Entries".

iOS (Apple Devices)

Safari

1. Go into settings and scroll down the Safari
2. Click on the tab that says autofill
3. Toggle off all the switches in there