Brendan Carney, head of customer banking at Citibank Korea, speaks during an interview with The Korea Herald at his office in central Seoul on Dec. 27. As banking becomes more mobile and branchless, it is also to bring a change in the way people perceive traditional banking services, and Citibank has introduced a new maintenance fee system to encourage customers to adopt faster to the new trend, according to Brendan Carney, senior vice president of Citibank Korea. With the introduction of the account maintenance fee system, which will start from March, the bank will charge new customers with less than 10 million won in bank deposits with monthly fees of between 3,000 won and 5,000 won.