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About
This app provides 2-factor authentication issuance and verification services for iOS devices. Securely manage your authentication needs directly from your smartphone.
✓2-factor authentication issuance
✓2-factor authentication verification
✓2-factor authentication management
✓QR code recognition
✓Face ID authentication
✓Push notifications for OTP
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What's New in SignPLUS
1.0.13
January 15, 2026
- 공지사항 기능 추가 - 특정기기에서 PIN 화면 UI가 깨지는 현상 수정
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FAQ
What is SignPLUS?
SignPLUS is a mobile application that provides 2-factor authentication issuance and verification services for iOS devices, developed by Korea Information Certificate Authority Inc.
Is SignPLUS free to use?
Yes, SignPLUS is available for free on the App Store. There are no in-app purchases or subscription fees required to use its core authentication features.
What devices does SignPLUS support?
SignPLUS is designed for iOS devices, specifically requiring iOS 14.0 or later. It is compatible with iPhones, iPads, and iPods. The app cannot be used on jailbroken or modified operating systems.
How secure is SignPLUS?
SignPLUS utilizes Face ID and push notifications for OTP for secure user verification. It is designed to work on standard operating systems and does not support modified devices, enhancing its security posture.
Does SignPLUS have ads?
No, SignPLUS does not contain advertisements. The app is free to download and use without any ad interruptions.
How often is SignPLUS updated?
The latest version of SignPLUS is 1.0.13, last updated on January 15, 2026. While specific update frequency isn't detailed, this indicates ongoing development and maintenance.
What permissions does SignPLUS require?
SignPLUS requests optional permissions for Camera (QR code scanning), Face ID (biometric authentication), and Notifications (OTP push notifications). These permissions enhance functionality but are not mandatory for basic service use.
Where can I get support for SignPLUS?
For any questions or issues regarding SignPLUS, you can contact their customer center at 1577-8787. They are available to assist with your authentication service needs.
