It was newly found that the system failure at the end of last month, when Mizuho Bank's ATMs were temporarily unavailable all over the country, was caused by the work of switching from a paper passbook to a digital passbook that allows you to check the transaction history on your smartphone.
Mizuho introduced a digital passbook from this year and called on depositors to switch, but it became a stumbling block from the beginning.
At Mizuho Bank, on the 28th of last month, 80% of ATMs nationwide were temporarily unavailable due to a system failure.
The bank explained that the cause was the work of migrating the data of the time deposit, which overloaded the system, but this work was done to switch the paper passbook to the digital passbook. ..
Digital passbook is a service that allows you to check transaction history for a longer period of time than paper passbooks using a smartphone, etc. Mizuho Bank introduced it in January.
We have been calling on depositors to switch to digitalization in order to reduce costs, but the Mizuho Group may be forced to rethink its plans in the form of a stumbling block from the beginning.