| Launch of App-Based Pass Certificate for Identity Verification
| Provides strong security beyond that of an accredited certificate
| Pass Adds 7 Million Subscribers in 9 Months

The three mobile carriers announced on the 25th that they are launching the 'PASS Certificate' based on the joint identity verification brand 'PASS' app and are making a full-scale entry into the private authentication service market.
The newly released Pass Certificate is a private certificate linked with the Pass identity verification app, which can be conveniently used for various identity verifications at public institutions, online document issuance applications, financial transactions, and electronic signatures on contracts.

Pass certificates offer superior convenience compared to existing authentication methods. It can be issued within 1 minute of launching the Pass app, and after signing up, you can make an electronic signature by simply entering your mobile phone number.

As the three major mobile carriers are identity verification agencies designated by the Korea Communications Commission, they verify identity through face-to-face verification during mobile phone subscription, which can reduce the verification process required for authentication services.

Such private certificates can be applied to various areas, including non-face-to-face account opening, electronic signatures for automatic transfers, insurance, and e-commerce services. Furthermore, by utilizing the Pass app, they can be used immediately without the need for complex solution development, making it easier to build a related service ecosystem.

Starting with the launch of the Pass certificate, the three major mobile carriers plan to fully develop Pass into an authentication platform for mobile subscribers.

The security level of the Pass certificate is equal to or higher than that of existing accredited certificates or financial sector apps. It safely protects customers' personal information by applying antivirus software, secure keypads, anti-tampering technology, and White Box Cryptography (WBC) technology, which stores certificates in a secure area within the mobile phone. It also prepares against external attacks by duplicating the dedicated network between the carrier's authentication server and the certificate platform, and by strengthening security in the communication channels.

The three major mobile carriers plan to continuously expand the scope of 'Pass Certificates' to public services, finance, and insurance, starting with the application of KT's 'Public Notification Text' service to public institutions in the first half of this year.

Last July, the three mobile carriers integrated their mobile phone app-based identity verification brands, which were previously serviced under different names such as 'T Authentication', 'KT Authentication', and 'U+ Authentication', into 'PASS'. Since the brand integration, the number of subscribers has steadily increased, and the number of identity-verified subscribers of the three telecommunication companies, which was around 14 million before the integration, has exceeded 20 million as of April, an increase of more than 7 million.