Jimy Lim, writing 1B, forth blog post

Traffic card is beatiful side.

If we have traffic card, we can use it anywhere.
Also we can transfer to other transportation.
Korea encourage people to use traffic card.
Traffic card has some merit.
First it is cheaper than cash.
It disconts almost 20% of its price.

Second it is very convenient use.
Recently It can possess various way.
As chip, it can have within moblie phone.
Also can hang moblie phone.