In Turbo 2.1 and up, recently viewed products are now available to display on the homepage, collection page, and product page. You can customize the layout (grid or slider), the product limit and number of products per row.
To enable Recently Viewed as a section on the homepage go to:
Online Store > Themes > Customize > Sections > Add section> Recently Viewed:
More on setting up the homepage with -> Article: Turbo Homepage setup
Recently viewed products when enabled will appear in sidebar of the collection page. To enable it go to Online Store > Themes > Customize > navigate to the collection page then click on Collection/Sub-collection > Content > Add Content, and choose Recently viewed products:
Recently viewed products can appear in the sidebar or as a section on the bottom of the product page. To enable it as a section, navigate to a product page click on Product > Recently Viewed Products > Show recently viewed products:
To enable this on the sidebar click on Product > Content > Add Content, and choose Recently viewed products.
Testing Recently Viewed Products
To test the recently viewed products, view your online store outside of the Editor and visit multiple product pages to build up your recently viewed list.
Please note that Recently viewed products will need to be enabled for each page template type: product, product.description-bottom, product.full-width-images and product.details, where you can follow the same steps outlined above for Product page. If you don't see recently viewed products on one of your product pages, but you see it on others, check that this feature is enabled in the section settings.