When you contract, use bank cards for expensive purchase
What you do?
Maybe most of you write your sign on some paper as a mark of promise.
In Japan we have unique style of promise mark.
It is Inkan
Or we call it Hanko too.
It is size like as a cigarette.
We use it like a stamps.
All Japanese has Inkan.
We need it in many scene.
Make bank account , contract, rent money, get married, rent room, and for working.
In other words, if you live in Japan, you have to have Inkan.
Of course I have it too.
And I heard from one American friend that
Foreigner buy Japanese Inkan for souvenir.
Why don't have it?