EasyCard is a must if you are in Taiwan. What first started as an electronic transport ticket system has become one of the most common mobile payments for pretty much everything throughout the island. EasyCard services range from public transports to payments for parking to convenience store purchases.
You can purchase an EasyCard at any MRT station or convenience stores such as 7–11 or FamilyMart for around NT$ 100 each. Check out the different types of EasyCards here.