[Karyzelka]

I'm just curious, do these retailers have access to see if the SN has been activated and in use?

It really depends on the item and who it is your buying from.

Ps5 bought directly from Sony tend to be blacklisted from online features, but if you buy from a retailer like Currys, Bestbuy etc. there's a lower chance of getting blacklisted but still possible.

Iphones bought from Amazon Uk tend to be blacklisted as well as of late, so it really just depends on the product.