Does Taiwan's Easy Card get deactivated if one doesn't use it for a while? How long does it take for the card to get deactivated? What happens to the balance that remains on the card? Can the card be reactivated, and if so, is there any fee for doing this?
The card is valid until you refund it:
The Easycard does not expire.
The EasyCard will be valid until it is refunds.
Please check the balance before you use it.
(From an email with them)