# JPKI eSign signature on PDF — JPKI eSign by My Number Card

> Sign PDFs electronically with Japanese My Number Card and manage card information. (iPhone/iPad app by 玺 章.)

- Source: https://appshunter.io/ios/app/jpki-esign-signature-on-pdf/id6458650235 (this page in markdown: same URL + `.md`)
- Developer: [玺 章](https://appshunter.io/developer/1523675853)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Rating: 4.50/5 from 6 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16 · 31 MB
- Languages: American English, Japanese, Chinese (Simplified, China)
- Released: 2023-12-19
- Data updated: 2026-08-12
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/jpki-esign-signature-on-pdf/id6458650235/reviews.md

## What is JPKI eSign signature on PDF?

Features
[My Number Card (Japan ID Card)]
・JPKI (Japanese Public Key Infrastructure) AP
    JPKI eSIgn to PDF
    Obtain electronic certificate and verify expiration date
・Card Info confirmation AP
    Read card info and face photo
・PIN management
    Retrieve user authentication PIN
    Read Password retry count
   Reset PIN

 
[PDF tools]
・Display PDF
・Create one PDF from multiple photos and PDFs
・Scan to PDF with camera
・Verify PDF signed by JPKI

Examples of using JPKI signatures
・e-Tax electronic documents for national tax returns
・Registration and deposit network of the Legal Affairs Bureau
・Real estate registration procedures
・Commercial and corporate registration procedures
・Moveable property transfer registration procedures
・Debt transfer registration procedures

Electronic signature data

Signature format adbe.pkcs7.detached
・Signature algorithm SHA256withRSA
・Type Sig
・Filter Adobe.PPKLite
・SubFilter adbe.pkcs7.detached
・Name ＜Name on My Number card＞
・M ＜Date and time of digital signature＞
・ByteRange ＜Byte range of part used to generate hash value＞
・Contents ＜PKCS#7 signature data binary format in hexadecimal＞

Notes
◇About reading My Number Card
・Please hold the card over the smartphone until reading is complete.

-As reading is not accurate on a metal desk, try moving the My Number Card and smartphone away from the desk.
-If the response is poor, try removing the cover or case.

-If the card is not held over the smartphone correctly, reading will not be possible.
For details, please check the support site below.
https://www.jpki.go.jp/faq/trouble/iphone.html
◇About passwords

- The signature password is 6-16 alphanumeric characters, and the user authentication PIN is a 4-digit number.
- If you enter the signature password incorrectly five times in a row, or the user authentication password incorrectly three times in a row, the password will be locked.
- You can unlock the password at your local municipal office.

EULA　https://github.com/SealSho/app/blob/main/eula.md

## Key features

- Electronic signature with My Number Card
- Verify JPKI signatures on PDFs
- Create PDFs from photos
- Read My Number Card information
- PIN management for My Number Card

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Unlock in 1 month | $5.99 | per month |
| Unlock in 1 year | $49.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Export 1 File | $0.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/jpki-esign-signature-on-pdf/id6458650235/reviews.md

### 5/5 — Good

*2025-04-12*

Good

**Developer response:** ご利用いただきありがとうございました

## Frequently asked questions about JPKI eSign signature on PDF

### What is JPKI eSign signature on PDF?

JPKI eSign signature on PDF is an application that enables users to electronically sign PDF documents using their Japanese My Number Card and its associated public key infrastructure (JPKI). It also offers functionalities to create PDFs from images and verify existing digital signatures.

### Can I use JPKI eSign signature on PDF offline?

The description does not specify offline functionality for all features. However, core functions like signing PDFs and managing card information typically require an active internet connection for verification and data processing.

### What are the subscription plans for JPKI eSign signature on PDF?

JPKI eSign signature on PDF offers two subscription plans: 'Unlock in 1 month' for $5.99 per month and 'Unlock in 1 year' for $49.99 per year. These plans likely unlock advanced features or remove limitations.

### How often is JPKI eSign signature on PDF updated?

The app was last updated on February 27, 2026, indicating a recent update. The version number is 2.3.0. Frequent updates suggest ongoing development and support for the application.

### What devices support JPKI eSign signature on PDF?

JPKI eSign signature on PDF is available for iPhone, iPad, and iPod devices. It is designed to work across Apple's mobile ecosystem.

### Does JPKI eSign signature on PDF have ads?

Yes, JPKI eSign signature on PDF contains advertisements. Users may encounter ads within the application interface.

### What is the age rating for JPKI eSign signature on PDF?

JPKI eSign signature on PDF has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### How do I reset my PIN for JPKI eSign signature on PDF?

The app allows for PIN management, including resetting the user authentication PIN. If you encounter issues or lock your password, you can typically unlock it at your local municipal office in Japan.

## Version history (last 5 releases)

### 2.3.0 — 2026-02-27

Improve performance

### 2.1.2 — 2025-08-10

improve performance

### 2.1.1 — 2025-08-05

remove the stamp in signed PDF, new EULA, privacy etc

### 2.1.0 — 2024-10-03

fix verify pdf

### 2.0.0 — 2024-08-05

Remove the feature of reading Driver's License and Residence Card
Improve performance

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## More apps by 玺 章

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All apps by 玺 章: https://appshunter.io/developer/1523675853

## Related topics

[jpki esign signature on pdf](https://appshunter.io/ios/topics/jpki-esign-signature-on-pdf) · [jpki](https://appshunter.io/ios/topics/jpki)

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*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 2026-08-12.*