스마트OTP 공동앱 is a free Android application developed by 금융결제원KFTC under the Business & Productivity category. Its subcategory is Finance. The app allows NFC-enabled smartphone holders among individual banking customers, including individual business owners, to generate a One-Time Password (OTP) for electronic financial transactions such as fund transfer and reissuance of public certificates. Users can visit a financial company capable of issuing Smart OTP to get it issued and fill out the application for issuance of Smart OTP and submit ID card. The app also has a device registration feature, which is a procedure of registering a smartphone with the KFTC so that OTP is generated only on the smartphone where the customer has registered the device. The app requires access to phone and storage space, and selective access to allow display on other apps.