Here are two alternative possibilities of objection:
Example 1: Checkbox
Example 2: Link
Please extend the example in such a way that the visitor gets feedback after clicking on the link and his action can possibly be undone.
Three possible JS-API functions
Three JS-API functions can be used, as shown in the integration examples above:
Check Tracking Status (in response you will get either true or false)
_etracker.isTrackingEnabled()
Disable Tracking Status
_etracker.disableTracking()
Activate Tracking
_etracker.enableTracking()