Commuter passes are called teikiken/定期券.
They can be bought in many types 1 month, 3 months, 6 months and so on.
If you make the trip 5 times a week it saves a lot of money and students get an additional discount.
You can renew them easily on the same touch card and they are re-printed using heat.
It is registered to your name so if you lose it, it’s easily replaceable.
Also, it allows you totally free travel between any of the stations on your commute.