PIN Mnemonic (PFA) app icon

PIN Mnemonic (PFA)

PIN Mnemonic can be used to find out strategies to memorize a PIN.

SECUSO Research Group · org.secuso.privacyfriendlypin

Not rated yet 1K+ downloads v2.0.5 4.7 MB Android 4.2+ PEGI 3 · Everyone

  • Same certificate as the 2 other versions checked Details

At a glance

Latest version
v2.0.5 (10)
Updated
Apr 23, 2025 (1 year ago)
APK size
4.7 MB
Requires
Android 4.2+ (API 17)
CPU support
Any (no native code)
Category
Education (app)
Website
secuso.org
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

PIN Mnemonic (PFA) is an app by SECUSO Research Group in the Education category. It has no native code, so it runs on any Android processor.

Since version 2.0.3, the APK grew from 2.9 MB to 4.7 MB.

What's new in v2.0.5

Updates to Android 14

Description

From the listing uploaded by “appupdater”.

The Privacy Friendly PIN Mnemonic application can be used to find out strategies to memorize a Personal Identification Number (PIN). It belongs to the group of Privacy Friendly Apps developed by Karlsruhe Institute of Technology, Germany. After entering the PIN, the application displays up to five strategies for memorizing the PIN: 1) It draws the shape on the number pad and highlights the numbers corresponding to the PIN. 2) It determines whether the PIN forms a word using the letters of the number pad. 3) It checks if the PIN is in year or date format. 4) It checks if the PIN underlies a mathematical rule. 5) It provides symbols for inventing a little story to facilitate memorizing the PIN. The application also provides the possibility to practice entering the PIN keeping the preferred mnemonic(s) in mind. Our app differs from other applications with respect to two aspects: 1. The Privacy Friendly PIN Mnemonic App does not use any permission. 2. The Privacy Friendly PIN Mnemonic App completely relinquishes advertisement. Many other free apps in the Google Play Store dazzle annoying advertising and also shortens battery life. You can reach us via Twitter - @SECUSOResearch (https://twitter.com/secusoresearch) Mastodon - @SECUSO_Research@bawü.social (https://xn--baw-joa.social/@SECUSO_Research/) Job opening - https://secuso.aifb.kit.edu/english/Job_Offers_1557.php

Version history

3 versions are listed, going back to v2.0.3.

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Certificate issued to “Philipp Rack” Not the developer's name (“SECUSO Research Group”). Names in certificates can't be verified, so this alone proves nothing.
  • Same certificate as the 2 other versions checked

Store checks and file details

  • Developer signature verified Apr 23, 2025
  • Signed byCN=Philipp Rack
  • Signing certificate (SHA-1)CE:01:A6:12:18:B9:7A:C4:DE:AA:75:DA:4E:5A:FB:DA:05:9D:FF:20
  • File MD560362689c471707c6bc0c7bced19c4c8
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Required hardware & features

PIN Mnemonic (PFA) APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the PIN Mnemonic (PFA) APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 60362689c471707c6bc0c7bced19c4c8.

Tags

More Education apps