[ImprovingLizard]

but the main question is "why delivery guy should deliver the package/envelope with a pre-made label based on what is written on the label instead of what the system  and scans state?"

^ Nailed It.

If we were still In the 60s, whereby drivers delivered packages purely based on what's written on the shipping label, then yes, the flawed FTID will work.

But the thing is that it is not some kinda myth, which mythbsuster should try out. I know people who makes a living from these in my country. Some use advanced methods with insiders, but i know those who do even the silly envelope FTID methods and still are able to pull huge refunds even nowadays. So that is why I started to question the FTID method and the rumours around him, cause it seems that it shouldn't work at all, especially now, when it is not only illogical, but also abused badly by everyone everywhere. Still there are examples of it working like a charm. So maybe there are some ways how you can use it in your favor.

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Would you say this FTID method will work or is it too simple?
https://sinister.li/Thread-Tutorial-Simp...top-paying

I wouldn't use that guide. Edit QR code too. Wouldn't use a basic envelope either. At least use a small box with something inside. I post a pack of biscuits but could be anything.

How would you explain the edited label logic? How you understand it?

What do you mean, how would I explain it? In most cases as long as you get delivered status on the ftid it's enough providing it's a prepaid label from the company themselves. Ive very rarely ever had them say they've not received the parcel even though I know they haven't. And even if they do if they are liable they will refund you anyway. It's just important to research on which companies/couriers it works for really. Its not a foolproof method that will work on any store. But it is the best method if you doing a high volume of refunds and hitting the same stores. You don't want to keep doing DNA and such to your own address.