With all due respect: it is not a matter of opinion. The basic formula of the old date codes are freely available online to everytone. A sweatshop can look it up in seconds and start pushing out products with perfectly reasonable date codes. They want to make a Speedy B 25 in Damier Azur? They go to eBay, check the date codes on a few recent listings and start to vomit out bags with — again — perfectly accurate date codes. It is so easy that even you and I could do it. Looking up a date code and getting a metal stamp manufactured for it is done in a day for less than $30. This is nowhere near safe. And the date codes are not serial numbers, they are not for authentication. People here made a false religion, since they wanted to have faith in something, and they chose the date codes as the most important factor of authenticity. Not the materials, not the thread, not the leather, not the glazing, not the overall feel, but that basic industrial marking. The code, that is not just not unique at all, but by nature appears on thousands of items a week. For example: most canvas Keepalls and Bandoliere Speedys are made in Ducey, Normandy. Those products sell like hot cakes. It means that there are thousands and thousands of items with the exact same code of DU0211. How does that prove authenticity?
As
@MissV absolutely accurately pointed out, these codes are not just simple serial numbers wth a formula that can be guessed. Reading them requires an LV owned iOS device and a secure connection to the LV server, that can decode it. If mere mortals decode the RFID chip's data, they only get a very long gibberish.
But imagine if some magician could find out the sercet formula and create a code. The code in itself would mean nothing, since it should be on the LV blockchain. Which means that LV product data is practically working like BitCoin. It is called a chain, because all of the elements are tied onto an indestructible chain. So basically:
- they produce a Speedy, they generate a unique code for it, and link that code to the end of the blockchain
- they make another Speedy, and they link its code after the previous code
- and so on, and so on...
This blockchain technology has 2 major benefits:
- no elements can be removed, since once 1 is removed, the whole chain collapsed, all data is broken
- no elements can be added in secret, if the server adds a new link to the chain, all the other 'chain pieces' will know about this, and it will be transparently visible for every user. So if a hacker would want to add a new link from the outside to the secure Louis Vuitton chain on the company server, LV would know in a split second.
So to sum it up, the blockchain based chips are insanely secure, the serial number and the chips that other brands used in the past are toys compared to this.
The whole problem derives from people's instincitive need for a 100%-sure sign of authenticity. And in reality, Louis Vuitton never provided any. Ever. They have one 100%-sure formula, and they want us to use that only: buying from them from their boutiques.
The date codes were never meant for this, the Internet people came up with this idea, that "if a code matches this, then it is probably maybe authentic". It is bs, but it was a very handy belief for everyone: people got a piece of mind, resellers got less suspicious buyers, and the so-called "authenticators" got work. Win-win-win. Or at least people loved to feel like that.
This new code, no matter how secure and accurate, only does its magic for Louis Vuitton. We mortals won't be able to check them, unless an SA is kind enough to do so.
But this was the case in the classic datecode era too. No one else besides Louis Vuitton could tell if an item is authentic or not. And they could check authenticity in the past too, they used many (many many) small variances during production, they documented them, and when an item needed to be checked, the original workshop that made that item could check it easily, since they knew exactly that on that week of that year, how they made the Speedys. But it only worked with the know-how of the ateliers, the date code only told Vuitton which atelier they should go to for a check. So the old codes were not a sign of authentictity, but merely an address of the place Vuitton (and no one else) can go to for authentication.
Sorry for the long post.