Recently viewed products widget allows you to make the shopping process at your store easier for customers by displaying the products the users have already opened.
HOW TO ADD A RECENTLY VIEWED PRODUCT WIDGET:
On the Admin sidebar, go to Content > Elements > Pages
Find the page that you want to add the widget to and click Edit in the Action column.
Under the Content tab, click on Insert Widget...
Under the Widget Type, select Recently Viewed Products
Fill in the required fields
Click on Insert Widget
Click on Save