NFC Card Management Scripts

This project contains scripts for writing data to and verifying data on NTAG215 NFC tags using a Python.

Prerequisites

Python 3
pyscard (pip install pyscard)
ndeflib (pip install ndeflib)
preferredsoundplayer (pip install preferredsoundplayer) or another module for playing sound files.
.env file (See "Environment Variables" section)

Set up environment variables:
- Create a .env file in the project directory.
- Add the following variables:
```
NFC_URL=[https://some-random-url.com](https://some-random-url.com)
PASSPHRASE=YourSecurePassphrase
```
- Replace https://some-random-url.com with the actual URL you wish to encode on the NFC tags.
- Choose a secure passphrase for tag protection.
Writing data to an NFC tag:
- Place an NTAG215 tag near your NFC reader.
- Execute python write_card.py
Verifying data on an NFC tag:
- Place an NFC tag with the expected URL near your NFC reader.
- Execute python check_card.py
- The script will play a success or error sound based on whether the tag's data matches.

write_card.py
- Detects NTAG215 NFC tags.
- Authenticates with the tag password (if set).
- Encodes the URL from the .env file into an NDEF message.
- Writes the NDEF message to the tag.
- Sets a password on the tag for protection.
check_card.py
- Detects NTAG215 NFC tags.
- Reads the NDEF message from the tag.
- Compares the stored URL with the expected URL from the .env file.
- Plays a success or error sound to indicate the verification result.

The scripts use the following environment variables: