Add U.S. Bank to the list of companies allowing its customers to access its mobile app through their thumbprint.

The $422 billion-asset company announced Thursday that it has updated its iPhone app to support Touch ID, a biometric authentication tool.

"We have been looking at ways to use biometrics such as voice and fingerprint to authenticate identification for several years," said Gareth Gaston, head of omnichannel banking at U.S. Bank. "Today we have critical mass. With more and more devices using fingerprint as an option to unlock tablets and phones, customers are not only comfortable with fingerprint login, they expect it."

Indeed, the lack of Touch ID capabilities was a common complaint among customers following a relaunch of the mobile app last year.

By comparison, BBVA's Simple, American Express and Discover Financial Services incorporated Touch ID in late 2014. JPMorgan Chase adopted it in June 2015 and Bank of America followed in September.

The lack of Touch ID, along with functionality issues for some customers, garnered U.S. Bank's app a one-star rating in the Apple App Store at the time. It has since improved to four out of five stars and the most recent comments on the app store applauded the arrival of Touch ID.

The feature will be available in future releases of the U.S. Bank Mobile app for iPad and Android users, the company said.

Additionally, U.S. Bank has enhanced the image capturing capabilities of is mobile deposit feature. The company said the enhancements make it easier to "get the right image on the first try."