# Digital Stamp Decoder

> App to reveal hidden images on USPS postage stamps using Scrambled Indicia® technology. (iPhone/iPad app by Graphic Security Systems Corp..)

- Source: https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165 (this page in markdown: same URL + `.md`)
- Developer: [Graphic Security Systems Corp.](https://appshunter.io/developer/1176688211)
- Category: Education, Utilities
- Price: $2.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.6 · 205 MB
- Languages: English
- Released: 2024-10-28
- Data updated: 2026-06-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/digital-stamp-decoder/id1671241165/reviews.md

## What is Digital Stamp Decoder?

Uncover hidden images in USPS postage stamps with the Digital Stamp Decoder! Originally developed by GSSC in partnership with USPS to protect against counterfeiting, this app brings the innovative Scrambled Indicia® technology to your smartphone. Now, you can reveal the hidden designs in the popular Shuttle Stamp, a must-have for stamp collectors and philatelists. Download the app, showcase your collection, and enjoy a unique, modern twist on stamp authentication. Don't miss out on this innovative collector's tool!

## Key features

- Reveal hidden stamp images
- Utilizes Scrambled Indicia® technology
- Authenticates USPS postage stamps
- Aids stamp collectors and philatelists
- Showcase stamp collection


## Frequently asked questions about Digital Stamp Decoder

### What is Digital Stamp Decoder used for?

Digital Stamp Decoder is used to reveal hidden images on USPS postage stamps. It employs Scrambled Indicia® technology, originally developed to protect against counterfeiting, allowing users to see designs not visible to the naked eye.

### How much does Digital Stamp Decoder cost?

Digital Stamp Decoder is a paid app, priced at $2.99. This one-time purchase grants access to its stamp decoding features.

### What devices support Digital Stamp Decoder?

Digital Stamp Decoder is available for iPhone and iPod devices. It is designed to run on these Apple mobile platforms.

### How often is Digital Stamp Decoder updated?

The latest version of Digital Stamp Decoder is v0.2.1, last updated on April 1, 2025. Updates are provided to ensure continued functionality and compatibility.

### What is the age rating for Digital Stamp Decoder?

Digital Stamp Decoder has an age rating of 4+. This indicates it is suitable for users aged four and older.

### Does Digital Stamp Decoder have ads?

No, Digital Stamp Decoder does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

### What is the learning methodology of Digital Stamp Decoder?

The app's learning methodology is hands-on and visual, allowing users to actively engage with their stamp collection. By revealing hidden designs, it enhances understanding of stamp security features and philatelic art.

### Does Digital Stamp Decoder offer progress tracking for collectors?

While Digital Stamp Decoder focuses on decoding individual stamps, it allows users to showcase their collection. Direct progress tracking features for stamp acquisition or study are not explicitly detailed.

## Version history (last 2 releases)

### v0.2.1 — 2025-04-01

Improved performance on series 16 iPhone devices.

### 0.2.0 — 2024-10-28

No release notes.

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## More apps by Graphic Security Systems Corp.

- [BrandMark](https://appshunter.io/ios/app/brandmark/id1176688212)
- [CQR Scanner](https://appshunter.io/ios/app/cqr-scanner/id1606242074)
- [MintMark® Mobile](https://appshunter.io/ios/app/mintmark-mobile/id6478985687)

All apps by Graphic Security Systems Corp.: https://appshunter.io/developer/1176688211

## Related topics

[digital stamp decoder](https://appshunter.io/ios/topics/digital-stamp-decoder)

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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 2026-06-01.*