0 to prove that something is real, true, or what people say it is: --
1 to prove that something is real, true, or what people say it is: --
Each of these signatures must be authenticated by a lawyer.
Holograms can be used to authenticate documents.
2 to prove that someone is a particular person: --
We offer electronic certificates that authenticate the identity of internet traders.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.