About location-based store reminders
Want to give yourself a quick reminder to visit a store you’ve seen an ad for on Google? You can set up a Google Now alert so that it reminds you to stop by that store whenever you're near it.
Tap Remind me when I’m nearby when prompted on the search results page, and we’ll send you a notification on your phone’s home screen, when you’re near the store location mentioned in the ad.
Tapping the notification will bring you to a Google Now card with more information and allow you to resume your search.
Here's an example of a Now card: