NFCPassword

A small android application to store a (master) password encrypted on a NFC tag.

Prerequisites

• Android Studio
• Android SDK API Level 26 (Android 8.0 Oreo)
• a NFC tag (for instance NTAG203 or NTAG213)

How to use the app?

The app does two things: store a password onto a NFC tag or read it from NFC tag into clipboard.

Store your password on the tag

• input your password
• press upload button
• hold NFC tag close

Read your password from the tag

• hold NFC tag close
• password is decrypted and put into clipboard
• use your password
• dont forget to clear the clipboard after usage (Clipboard Safety)

What key is used to encrypt my password?

The Android ID (Settings.Secure.ANDROID_ID or SSAID) see:

Device identifier

Backup your password before doing a factory reset!

Is it secure?

Most likely not.

Use it without warranty and at your own risk.