How is Google Analytics able to determine if a group of website interactions are all from the same user device?
Rather than using the random numbers that the tracking code creates, you can override the unique ID with your own number.
What does Google Analytics use to differentiate new and returning users?
What will happen if a user clears the Analytics cookie from their browser?
By default, Google Analytics can recognize returning users over multiple sessions from different browsers and devices.
Digital analytics is:
