Smart-ID is now available in Belgium!

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Kaoru Imouto !!install!!

Smart-ID is the easiest, safest and fastest way to authenticate yourself online, register in e-services and sign documents.

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  • kaoru imouto543 906users in Estonia
  • kaoru imouto981 192users in Latvia
  • kaoru imouto1 360 640users in Lithuania

For your business

One strong solution for all of your identity needs: universal token for authentication and signing.

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Case studies

Find out how our clients with Smart-ID changed their experience of digital services

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Kaoru Imouto !!install!!

Do you see a QR code when logging in?

We’re excited to introduce a new feature that makes using Smart-ID even safer and more user-friendly! You can now log in with Smart-ID by scanning the QR code shown on your computer.

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kaoru imouto
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How does it work?

How does it work?

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kaoru imouto
kaoru imouto
kaoru imouto

Do you need to update your Smart-ID?

Smart-ID accounts need to be renewed (and re-authenticated!) every 3 years. Just make sure you have updated your app software before and you have your preferred authentication method available. kaoru imouto

  1. Guidelines for renewing your Smart-ID account
  2. Updating the app and phone software

Are you getting a new phone?

If you’re getting a new phone (or have reset your phone) and want to continue using Smart-ID, you need to register a new account. Follow these easy steps and you’ll be ready to go in no time: Kaoru fits into the "Tomboy Imouto" archetype

  1. Download Smart-ID app
  2. Register a new account
  3. Delete your inactive accounts

What is Biometric registration?

Biometric identification suits you if you can’t use other electronic registration methods but you do have a passport or ID-card with an electronic chip and a mobile phone with NFC-support. This enables you to scan your documents at home to complete the authentication process. Kaoru Asoi ( Oreshura ) Kaoru has a

  1. Requirements for biometric registration
  2. Getting ready: how to avoid mistakes
  3. Step-by-step instructions 
  4. Error codes and how to solve issues
  5. What to do if your document got locked

How to sign documents with Smart-ID?

There are several ways to sign document with Smart-ID. E-services you already use allow you to confirm transactions and sign agreements within the e-service itself. If you want to choose what and where to sign, you can use online signing services (like Adobe Sign, Lahdes and Dokobit), desktop software (DigiDoc4 and Dokobit add-in) or mobile apps (Dokobit or RIA DigiDoc).

  1. Digital signing with Smart-ID 
30.01.2026

Smart-ID+ Strengthens Authentication Security in Estonian Government services

Estonia's Government’s e-services are implementing Smart-ID+ as the new standard authentication method. This makes communication with the state more secure, faster and more convenient.
Read more
14.10.2025

Smart-ID’s Technology Heads to Armenia

Smart-ID's proven split key technology is heading to Armenia through a partnership between SK ID Solutions and local trust service provider imID. The collaboration brings Smart-ID's internationally recognized authentication and digital signing capabilities, already trusted by millions across the Baltics, to Armenian users.
Read more
kaoru imouto

Kaoru Imouto !!install!!

  • Convenient & fast

    Simple user interface and fast-acting

  • Multi-device

    Across device and multi-device usage

  • Secure

    Innovative use of advanced cryptography and proven PKI

  • Cross-country usage

    Same eID works across countries

  • Legally binding signatures

    Qualified Electronic Signature level digital signatures

  • Compliant

    EBA guidelines, eIDAS, GDPR and PSD2 requirements

Kaoru Imouto !!install!!

Kaoru fits into the "Tomboy Imouto" archetype. Unlike the shy or overly demure younger sister, Kaoru is typically depicted as more active, sometimes using masculine Japanese personal pronouns (such as " boku ") to refer to herself, which is common in Japanese media for tomboyish female characters 2.2.2.

Nature: Imouto Kaoru [DVD] [2000] [Region 1] [US Import] [NTSC]

┌─────────────────────────┐ │ The "Imouto" Appeal │ └────────────┬────────────┘ │ ┌──────────────────────────┼──────────────────────────┐ ▼ ▼ ▼ ┌──────────────────┐ ┌──────────────────┐ ┌──────────────────┐ │ Moe Aesthetics │ │ Built-in Loyalty │ │ Narrative Foil │ │ Childish charm, │ │ Natural bond and │ │ Challenges or │ │ "must-protect" │ │ unconditional │ │ drives the main │ │ design │ │ support │ │ protagonist │ └──────────────────┘ └──────────────────┘ └──────────────────┘

During the late 90s and early 2000s, the "Imouto" (younger sister) concept was a major marketing theme in the Japanese gravure industry, focusing on "innocent" and "neighborhood girl" aesthetics. Kaoru Asoi ( Oreshura )

Kaoru has a habit of calling her sister "neesan" (a term used to respectfully refer to an older sister) even when they are alone. She is also known for forgetting to eat when she gets engrossed in her photography projects.

By adhering to these guidelines, creators can celebrate the wholesome essence of the “kaoru imouto” archetype while fostering healthy representation.

Fiercely possessive, easily jealous, and entirely devoted to staying by her brother's side forever. Tracking "Kaoru" as the Little Sister

The prevalence of the imōto character has led to it being described as an "epidemic" in modern light novels and anime. While some critics find the overuse of the trope repetitive, its popularity remains strong because it fulfills a desire for uncompromised affection and closeness.

As the main heroine, Kaoruko embodies a different kind of "flower"—one that brings comfort and breaks down walls rather than engaging in typical, shrill romantic rivalry. Who is Kaoruko Waguri?

In targeted subculture media, such as the VNDB tracked database entries for visual novels like Imouto Pet , the character is explicitly designed around the younger sister trope. This iteration features classic markers:

While beloved, the Kaoru Imouto is not without controversy. Critics argue that she perpetuates the —a character too perfect, too forgiving, and too sacrificial. She often lacks the selfish, messy desires that make characters feel human. In series where she is not the main heroine, fans frequently suffer from "Kaoru Syndrome," where they become angry at the protagonist for ignoring the "clearly better" sister in favor of a more dramatic love interest.

Here is the tragedy of the Kaoru Imouto: she frequently suffers in silence. She will hide her own sadness to support her sibling’s romantic or career goals. If her brother falls in love with another girl, the Kaoru Imouto suppresses her own jealousy (if any) and becomes the secret cheerleader. She is the emotional insurance policy of the plot.

Achievements

2023

Obtained local qualified status for authentication in Latvia


In the TOP 10 most used apps in Lithuania


Most loved digital tool brand in Latvia

Recognised as the most loved digital tool brand in Latvia based on the Brand Capital survey.


Enables Apple Watch support

for electronic authentication and signing directly through the Apple Watch.


Now available in Belgium

2022

Smart-ID won joint 5th place as the most loved brand in Estonia


Smart-ID celebrates its 5th anniversary!

Smart-ID App user base grows to 3 274 621

Supports more than 700 e-services with authentication or for electronic document signing.


1500+ devices supported by Smart-ID app

Available platforms: App Store, Google Play, Huawei AppGallery.


Smart-ID app launched in India

App: Jio SecureID

2021

The most reliable authentication solution in Baltic countries.

International study by SK ID Solutions (e-identity solutions provider) highlights Smart-ID as the most reliable authentication solution in Baltics.


1 billion Smart-ID transactions made this year


Smart-ID app released for Huawei AppGallery

Smart-ID is now also available for download by Huawei smartphone users


Smart-ID app launched in Iceland

App: Audkenni

2020

Biometric registration method launched

Users can now register accounts by scanning their own travel documents.


State support for Smart-ID

All Estonian state services have full Smart-ID support and Smart-ID is used for age verification in Latvia.


Cloud signing

Adobe Acrobat Sign services now have Smart-ID support.

2019

Secure authentication recognised

Smart-ID authentication schema was evaluated as „level high” in Estonia and Smart-ID support is added to all state services.


Smart-ID app reaches 2 000 000 users

2018

Digital signatures

Becoming certified as QSCD means that signatures given with Smart-ID have the same legal standing as handwritten ones across European Union. 


Breakthrough of the Year

Smart-ID wins ITL’s Breakthrough of the Year.

2017

Prestigious awards

Smart-ID wins Service of The Year from Lithunian Industry Confederation and Silver in Estonian Design awards.


Smart-ID launch and reaches at first year 300 000 users