# NAV Azonosító > Two-factor authentication app for secure access to tax administration systems. (iPhone/iPad app by Nemzeti Ado- es Vamhivatal.) - Source: https://appshunter.io/ios/app/nav-azonosito/id1578451403 (this page in markdown: same URL + `.md`) - Developer: [Nemzeti Ado- es Vamhivatal](https://appshunter.io/developer/857762451) - Category: Business - Price: Free - Age rating: 4+ - Requires: iOS 11.0 · 27 MB - Languages: American English, German (Germany), Hungarian - Released: 2021-10-07 - Data updated: 2026-06-24 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/nav-azonosito/id1578451403/reviews.md ## What is NAV Azonosító? NTCA Identifier: Identification application of the National Tax and Customs Administration (NTCA) The NTCA Identification application is a free program created by the NTCA, which can also be downloaded to mobile devices with iOS operating system and can be used for two-factor identification. Role of the application For the even safer electronic administration of tax cases, the NTCA has introduced for second users a two-factor identification on the web interface of Online Invoice System. Besides user name and password, the code generated by the NTCA Identification application on the mobile device or approval of a login notification will be needed. Conditions needed for using the application For using the application, a secondary user account is needed in the Online Invoice System and the following technical requirements must be met: • iOS 11.0 or a higher version of operating system; • Active internet connection; • A camera (QR code scanner) because the user can be added by scanning a QR code. Operations that can be executed in the application, for instance: • Generating control codes, without having a data connection; • Adding and deleting more users; • Setting notification-based identification with data connection; • Entering data manually if scanning QR codes is not operational. After having downloaded the application, having provided user name and password at login, you have to make a connection between the application and Online Invoice System on the web interface. In order to make the connection between the application and the Online Invoice System, the QR code generated by the Online Invoice System must be scanned into the application with the camera of mobile phone or, if the scanning function is not operational, the 16-digit code must be entered manually. Making connection is only needed to be carried out in the course of the first use. When switching the two-factor identification on, you, on the web interface of the Online Invoice System, have to enter the control code displayed in the application downloaded onto the mobile device. Those authentication keys, which make the login possible even in the cases when the two-factor identification is unsuccessful, will be displayed on the Successful authentication interface. Following that, you will already be able to login to the web interface of the Online Invoice System, either by entering the code generated by the application or by approving the login notification. The language of application can be switched to English or German, under the Settings menu item. ## Key features - Two-factor identification - Generate security codes - Approve login notifications - Manage multiple users - QR code scanning - Manual code entry - Multi-language support ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/nav-azonosito/id1578451403/reviews.md ### 1/5 — Döbbenet *2025-02-02, version 1.1.2* Helyesírási hibás, nem működik az összekapcsolás. ### 1/5 — Működésképtelen *2025-02-01, version 1.1.2* Támogatás teljes hiánya. Működött 3 hétig, azóta nem nem lehet vele belépni. Semmit mondó hibaüzenet, sehol sincs leírás. ## Frequently asked questions about NAV Azonosító ### What is NAV Azonosító used for? NAV Azonosító is used for two-factor identification to securely access the National Tax and Customs Administration's Online Invoice System. It enhances security beyond just a username and password by requiring a code from the app or a login approval. ### How do I set up NAV Azonosító? To set up NAV Azonosító, you need a secondary user account in the Online Invoice System. After downloading the app, log in with your credentials and connect it to the system by scanning a QR code or manually entering a 16-digit code. ### Can I generate codes without an internet connection? Yes, NAV Azonosító can generate control codes without an active data connection. However, setting up notification-based identification requires a data connection. ### What are the technical requirements for NAV Azonosító? NAV Azonosító requires iOS 11.0 or higher, an active internet connection for some features, and a camera for QR code scanning. It is compatible with iPhone and iPod devices. ### Does NAV Azonosító have ads? No, NAV Azonosító does not contain advertisements. It is a free application developed by the National Tax and Customs Administration. ### Can I use NAV Azonosító in different languages? Yes, the language of the NAV Azonosító application can be switched to English or German through the Settings menu item. ### How often is NAV Azonosító updated? The latest version of NAV Azonosító is 1.1.3, last updated on December 1, 2025. Updates are released to improve functionality and security. ### Is NAV Azonosító safe to use? NAV Azonosító is designed to enhance security for accessing sensitive tax information through two-factor authentication. It is rated for ages 4+ and is a legitimate tool from the National Tax and Customs Administration. ## Version history (last 5 releases) ### 1.1.3 — 2025-12-01 To enhance user experience and the consistent operation of our applications, we have made minor text changes. ### 1.1.2 — 2025-01-30 Novelties, error corrections Installation of this version does not contain any novelty or error correction. Installation is solely necessary because of the change of the machine-to-machine interface encryption SSL certificate. ### 1.1.1 — 2024-10-03 Novelties, error corrections Installation of this version does not contain any novelty or error correction; its installation is solely necessary because of some technical changes. ### 1.1.0 — 2024-07-31 Bug fixes • Fixing the way notification-based messages are received. • Changing the date format – instead of the previous epoch format, it is now string dateTime. • Display related fixes. ### 1.0 — 2021-10-07 No release notes. ## Apps similar to NAV Azonosító | App | Rating | Price | Category | | --- | --- | --- | --- | | [mobilGAZDA](https://appshunter.io/ios/app/mobilgazda/id1561841192) | — | Free | Business | | [Billingo - Online számlázó](https://appshunter.io/ios/app/billingo-online-szamlazo/id1549525464) | 4.3 (7) | Free | Business | | [MobileNAV](https://appshunter.io/ios/app/mobilenav/id513026463) | 5.0 (1) | Free | Business | | [e-Szignó](https://appshunter.io/ios/app/e-szigno/id1481195992) | 5.0 (1) | Free | Business | ## More apps by Nemzeti Ado- es Vamhivatal - [NAV-Mobil](https://appshunter.io/ios/app/nav-mobil/id857762448) - [Online Számlázó](https://appshunter.io/ios/app/online-szamlazo/id1487463552) All apps by Nemzeti Ado- es Vamhivatal: https://appshunter.io/developer/857762451 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-24.*