The answer is to set up Google Analytics link taggging tool and web page redirects. The first thing you need to do is decide what URL you want to send this offline traffic to. You have three options:
- New domain (examplesite.com)
- Subdomain (deal.example.com)
- subfolder (example.com/deal)
After you decide what URL you are going to use you need to set the page up to redirect to a custom URL like example.com/?Utm_source=tv. In Google analytics we would see the source of the traffic was TV.
A tire company has a website named arizonatires.com and runs a tv advertisement. On the tv advertisement they tell people to visit aztires.com. When people click on aztires.com they are redirected to arizonatires.com/?Utm_source=tv.