Guideline: Rewriting an NFC Tag Using NFC Tools

Prerequisites

  • Android phone with NFC enabled
  • Download NFC Tools app at https://nfc.software/ and install the app
  • This NFC tag is ready to be rewritten
NFC Tools

Step 1: Read the Existing NFC Tag

  1. Open NFC Tools.
  2. Tap Read.
  3. Place the phone near the NFC tag.
  4. Review the information displayed:
    • Record type (URL, Text, Contact, WiFi, etc.)
    • Current data stored
    • Tag memory size and available space
NFC Tools

Step 2: Erase Existing Content (Optional)

If you want a completely clean tag:

  1. Go to Other.
  2. Select Erase Tag.
  3. Tap Erase.
  4. Touch the NFC tag when prompted.
NFC Tools

Step 3: Create New NFC Content

  1. Go to Write.
  2. Tap Add a Record.
  3. Select the desired record type:
Record Type Example
URL/URI https://yourwebsite.com
Text Welcome to S & J Bar Code
Contact vCard details
WiFi Network SSID & Password
Email support@example.com
Phone Number +60123456789
Launch App Open a specific application
  1. Enter the required information.
  2. Tap OK.
NFC Tools

Step 4: Write to the NFC Tag

  1. After adding all records, tap Write / XX Bytes.
  2. Bring the phone close to the NFC tag.

  3. Wait for the success message:

    “Write Complete”

NFC Tools

Step 5: Verify the Tag

  1. Return to Read.
  2. Scan the tag again.
  3. Confirm the new information appears correctly.
  4. Test the NFC action (open URL, connect WiFi, launch app, etc.).
NFC Tools