Of course such tags are completely irrelevant without the effects of the jurisdiction that aims to secure their authenticity. In particular, when buying online

Of course such tags are completely irrelevant without the effects of the jurisdiction that aims to secure their authenticity. In particular, when buying online from overseas you have very little guarantees of what you'll actually get, unless you are familiar with the brand and/or merchant. Things are different when buying domestically at a retail store. Retailers have supply chain or import the products themselves. Importing and selling products that violate safety standards, or products that show safety marks like CE without authorization, is not in the retailers' best interest, since the Customs Agents will come down hard on them. As large monetary sanctions are the only effective way to deter corporations from breaking the rules, the fines/reparations are proportional to the volume of the illegitimate products sold. Not to speak of the civil liability when some kid gets electrocuted thanks to the hazardous phone adapter your company imported.