Is it necessary for customer to sign up my site for getting “Active on Site” and “Viewed product” data ??

Hi there @masa, 

Welcome to the Community, happy to help!

Yes, you will only see this data from profiles if they have subscribed to your marketing either through a signup form or at checkout. Klaviyo doesn’t track anonymous browser activity,  however, once they sign up, we will track all their activity like ‘Active on Site’, ‘Viewed product’, ‘Opened email’ etc. 

However, if you do have profiles who are signed up, but you can’t see their activity, I’d ensure you have this feature checked in your integration page setup in your Klaviyo account.

Additionally, I’d check out these resources to gain more insight! 

• Getting started with Klaviyo
• Product certificate

Hope this helps!

-Taylor