How to Bind an RFID Card Number to a Database (with Code Example): Binding an RFID card number to a database typically involves three key steps: reading the card information, processing the data, and storing it in a database. Below is a complete implementation flow along with a Python code example for your reference.
Implementation Overview
1. Configure the RFID Reader
Choose an RFID reader module that is compatible with your RFID card, such as RC522, PN532, etc., commonly used with Arduino or Raspberry Pi.
2. Read the RFID Card Number
Use the appropriate RFID module library to read the card’s UID (Unique Identifier).
3. Establish Database Connection
Set up your database environment—such as SQLite, MySQL, or PostgreSQL—and connect to it through your code.
4. Store the Card Number
Insert the retrieved card UID into the database to persist the data.
Example Implementation (Python + PN532 + SQLite)
Below is a simple example using Python, the PN532 module, and an SQLite database.
1. Install Required Libraries
bash
pip install pn532
⚠️ Note: `sqlite3` is a built-in module in most Python environments and typically doesn’t need separate installation.
2. Read the Card UID
python
import time
from pn532 import *
pn532 = PN532_I2C()
pn532.SAM_configuration()
while True:
uid = pn532.read_passive_target()
if uid is not None:
print(f"Card UID successfully read: {uid}")
break
3. Write to the Database
python
import sqlite3
# Connect to (or create) the database
conn = sqlite3.connect('rfid_database.db')
cursor = conn.cursor()
# Create table if it doesn't exist
cursor.execute('''
CREATE TABLE IF NOT EXISTS rfid_cards (
id INTEGER PRIMARY KEY AUTOINCREMENT,
card_number TEXT NOT NULL
)
''')
# Function to save card UID
def save_card(uid):
cursor.execute("INSERT INTO rfid_cards (card_number) VALUES (?)", (str(uid),))
conn.commit()
# Save the read UID
save_card(uid)
# Close the connection
conn.close()
Suggestions for Enhancement
· Error Handling: Add exception handling for database operations and device connections to improve robustness.
· Data Security: If used in identity verification scenarios, consider encrypting the UID before storing it.
· User Interface: Add a front-end interface to improve user interaction and usability.
· System Integration: Expand to include user authentication, access control, logging, and more.
Summary
· Use an RFID reader module to extract the card UID
· Connect to a database and create a table if needed
· Insert the UID into the database to establish the binding
This basic setup can be extended for specific use cases such as attendance systems, access control, or member identification. adapted into English paraphrased form, a MySQL version, or with web interface integration, feel free to ask—I can help you expand it further.
FAQ:
How do I find the RFID card number?
Place the charge card at the back of your phone. Wait for your phone to read the card. The RFID code will be displayed under the label ID (dec).
What is an RFID number?
RFID: What is it? Radio Frequency Identification (RFID) technology uses radio waves to identify people or objects. There is a device that reads information contained in a wireless device or “tag” from a distance without making any physical contact or requiring a line of sight.
Where can I get my RFID number?
You can now purchase TNG RFID Tag from Touch 'n Go eWallet app by clicking eShop icon on the app's home page (app version 1.7. 72 and above) and order the tag and it will be delivered to the address of your choice. Alternatively, you may purchase it from our partners: Shell.
What is an RFID card?
The RFID is a sticker that is embedded with a radiofrequency chip. This chip makes every RFID unique to each customer. Affixed to the top left windscreen of a customer's vehicle. They are used as a form of electronic payment for tolls across the country, providing drivers a safer and hassle- free drive.
How to identify an RFID card?
Identification Using an RFID Reader. Place the card on the reader, and the card's frequency information can be directly read through the reader. There are many different brands of card readers on the market, which can not only read high-frequency cards but also identify RFID cards of different protocols.
How is RFID data stored?
How Do RFID Tags Store Data? The heart of an RFID tag is its microchip. This microchip, though incredibly small, can store a wide range of information depending on its size and design. The capacity of these chips can vary from 128 bits to as much as 8 kilobytes of data.
