HI!
I was born in Japan,but spent couple of years in China,so maybe I can answer your question

well,first of all,In japan,the train and their 改札 is highly advanced 

when you put your little ticket in to the machine,and then you walk a few step forward,the ticket will come out just beside you

当たり前のように見えるけど、外国にはこんな素晴らしい改札存在しなんだよね、、、、

there are too many things to mention,,,,,well,,,I think I would choose conveyor belt in Sushi restaurant 

like in くら寿司,if you order something on the pannel,the dish will be carried to your table in a few minutes

I think that's the best part of Japan,,,,,lol

I think Japan has many amazing technologies,but I don't know them. I have lived here for twenty years and I don't know other countries, so I don't compare  other countries.

So, please tell me them.I hope to get a message by a foreigner or Japanese person.


(( i fixed some mistakes ))