I don´t share that. I work for a multinational company and here in the EU the WARRANTY are covering the "object" against any manufacturating defect since the date of purchase for the time period stablished (6 months, 1 year, 2 years,....) independently of the owner and always in the case that the object is in good conditions (no demage by hit, bad use, abuse. etc). You need the probe of purchase, just invoice/warranty card + date + shop stamp. (IF OTHERWISE IS NOT STATED)
Warranties cover the object itself, not the owners. The Warranty is the contract that stablish you received a correct working device for the money you have paid for. The change of owner generally not voids the warranty while you do not manipulate or make a bad use the object.
Normally nobody check for your ID when you send the item to repair, because in the case that the previous owner has register the item (mainly for comercial/marketing reasons), the dealer has not access to that info. And in the case you go directly to the Brand Tech service, as far as I know is the same thing, unless the item is damage for a bad use or broken for a hit, they must service it free of charge during the warranty period if it´s a factory defect, independently of the owner.