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Screenshots

  • STSign screenshot 1
  • STSign screenshot 2
  • STSign screenshot 3
  • STSign screenshot 4

About STSign

STSign is the official STS mobile application for user enrollment and secure operation authorization via push notifications. With this app, you can: - Enroll your device by securely generating and managing cryptographic key pairs linked to your user account. - Receive and approve authorization requests through secure push notifications.

What’s new

Version 1.0.1 · Updated November 12, 2025

- Added Face ID authentication with a PIN fallback option. - Fixed various interface bugs and improved overall stability. - Introduced an automatic update check to notify users when a new version is available.

App privacy

The developer, Serviciul de Telecomunicatii Speciale, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Contact Info: Email Address
  • Identifiers: User ID, Device ID

Used for: App Functionality

Alternatives to STSign

Looking for apps like STSign? Here are 6 similar apps on the App Store. The highest rated is SPLM (5.0/5), and all 6 are free to download.

STSign vs. alternatives
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STSign – Free November 12, 2025
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