From Habr:
Paper card against the railway:
of the plus:
Compactly
You can twist as you want and separate the squares.
You can make notes.
It can be used as a tap in the car.
There is no paper, and the fire needs to be lit.
All emergency services with phone numbers.
Increases without brakes.
Upgrade costs 10 rubles per year. (There will be notify about the update every 10 minutes)
Does not require electricity.
The hoops will not take.
Do not turn to the left where it is forbidden.

From the Minuses:
It does not show where you are.
Don’t turn to the left where it needs to be done.
In the full darkness of light.