[mothered]

I saw that a lots of Carriers who does not require signature when delivery package make their own signature on this ,,courier machine".

It's very common for carriers to sign and document your name on their hand-held device, particularly when they're running late for their delivery schedule/run. FedEx Is known for doing this, but not so often with DHL.

What's then if I plan to SE item with DNA method but courier make signature with my full name?

Perfect, simply DNA It.