Mobile IDentification App vs Second

※If the app is not updated, errors may occur during app operation. Mobile ID, Mobile Resident Registration Card, Mobile Driver’s License, Mobile National Veterans Registration Card, and Mobile Overseas Koreans Identity Verification Card are IDs that can be issued on personal smartphones and have same legal effect as traditional IDs. [Mobile ID App Introduction] Mobile ID, Mobile Resident Registration Card, Mobile Driver’s License, Mobile National Veterans Registration Card, and Mobile Overseas Koreans Identity Verification Card are government-issued IDs stored securely on personal smartphones, carrying the same legal effect as traditional IDs and provides convenient usage. [Introduction to Mobile Resident Registration Card and Driver’s License] The Mobile Resident Registration Card and Driver’s License are legal IDs securely encrypted and stored on personal smartphones, issued by the Ministry of the Interior and Safety and the Korean National Police Agency. [Eligibility and Requirements] - Holders of a Resident Registration Card or Driver’s License, or new applicants - Smartphone registered under the applicant’s name - Subscriber to a domestic mobile network enabling personal identity verification iOS 16 or higher, with biometric authentication and NFC support ※For non-IC ID holders, QR issuance is available at community centers (Resident Registration Card) or driver’s license test centers (Driver’s License). ※Subscriber of mobile virtual network operator (MVNOs) can also apply. (Excluding TPlus (KCT – Korea Cable Telecom)) ※Corporate-issued phone or anonymous prepaid phones currently cannot be used. [How to Apply for a Mobile Driver’s License] To issue your Mobile Driver’s License quickly, bring your physical driver’s license and a smartphone with the Mobile ID app installed to a driver’s license test center. Applications can also be submitted at police department offices or through the Korea Road Traffic Authority's Integrated Driver’s License Services website for online IC driver’s license requests. ▶Issuance Methods (Resident Registration Card, Driver’s License): - Method 1: Replace your physical ID with an IC ID and issue the mobile ID directly by scanning (tagging) it with your smartphone. - Method 2: Use on-site QR issuance at community centers (Resident Registration Card) or driver’s license test centers (Driver’s License) without replacing the physical ID. ※ Mobile IDs (Resident Registration Card, Driver’s License) are legal IDs, and at least one in-person identity verification process is required at the issuing agency. ※ If a physical ID is replaced with an IC ID, future reissuance of a mobile ID upon changing smartphones will not require a revisit to the issuing agency. ※ IC Resident Registration Card: Application is available only at community centers, and it takes about 15 days for issuance. ※ IC Driver’s License: Issuance is available on the same day at license test centers or takes approximately 15 days when applying through police departments. ※ For online applications of IC driver’s licenses, select a date for receipt at least 15 days after the application date (excluding public holidays). ※ For details on IC Driver’s License issuance, visit the Korea Road Traffic Authority’s website (www.safedriving.or.kr). [Precautions] - Tagging IC IDs (Resident Registration Card, Driver’s License): Remove the smartphone case, place the IC ID on a flat surface, and ensure contact for 3–4 seconds. ※ Tagging area: Back upper section (near the camera). ※ Avoid overlapping IC IDs with other items like transit cards, as it may cause duplicate recognition. - Facial Recognition Procedure: Clean the smartphone's front camera and position it in a well-lit area. Keep your face about 40–50 cm (arm’s length) away, look straight ahead, and follow the instructions (e.g., blink, turn your head right and left). [Inquiries] Mobile ID Call Center: 1688-0990

Precise server time, at a glance. Second-Sync is a time synchronization tool for moments where one second matters, such as course registration and ticketing. It multi-samples the HTTP Date of your chosen site and aligns the difference from the server clock down to milliseconds. Drift tracking maintains accuracy over time, while the PiP timer lets you watch live server time even when using other apps. Key features - Precise synchronization: collects HTTP Date in parallel at least 30 times, then calculates the offset after RTT compensation, outlier removal, and EMA smoothing. - Drift estimation: runs linear regression on measured samples to track the slope of the device clock and maintain accuracy as time passes. - PiP timer: opens a Picture in Picture timer as a companion app, so you can monitor the server clock live while using a browser or other apps. - Example site shortcuts: quick buttons to load course registration pages for major Korean universities and ticket booking sites. - Multilingual support: supports Korean, English, Japanese, and Simplified Chinese, with a separate in-app language setting. Recommended for - Anyone who wants exact server time in situations where it is critical, such as registration, ticketing, or reservations. - Anyone who wants to keep accurate server time visible on iPhone or iPad while booking on the go. Notes - Synchronization may fail on sites that do not support the HTTP Date header. If so, enter another target server or use the example sites in the app. - Picture in Picture works only on supported devices running iOS 15 or later, including iPadOS. - Sync your server time with Second-Sync now. One button gives you stable synchronization and a PiP timer, so you do not miss the important moment!