Hsieh said in addition that new IC cards may cause problems for users who travel abroad.
Travelers may find it inconvenient to use IC cards in countries where ATMs have not been upgraded to read them, he said.
Although it is generally believed that IC cards, with their multiple encryption systems, are more difficult to forge than magnetic cards, most bankers said that they can only cross their fingers and hope that would-be criminals will find no way to crack the new, expensive system.
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