Google wants to help advertisers know just how much their ads make a difference.
In a blog post, the company announced their service Google Attribution that will track credit and debit card spending along with offline purchases.
"For the first time, Google Attribution makes it possible for every marketer to measure the impact of their marketing across devices and cross-channel - all in one place," the company said.
Today, Google can track user spending by using phone locations to know when you visit a store and internet data to see which ads lead you to make purchases online.
Details on purchases won't be accessed, but data on the values of all purchases will be available.
The new feature has already received some backlash for privacy concerns.
Renate Samson from Big Brother Watch urged users to take more control over their virtual information.
Samson said, "Companies track and monitor in order to advertise to us.
If we don't want them to do that, take control; don't give your email address for a digital receipt, check the terms and conditions, avoid using loyalty cards and where possible choose to pay with cash."