NFC Encoding
Custom NFC encoding
Each NFC card is individually encoded to your specifications. Integrated into the production flow.
Supported chips
4 types of NFC chips
Choose the right chip for your use case. From a simple URL to a cryptographic authentication system.
NTAG213
144 bytes
The most popular chip. Perfect for short URLs, digital profiles, and NFC business cards.
Short URL (up to 132 characters)
Compatible with all NFC smartphones
Instant reading without an app
NTAG216
888 bytes
More memory for complex data. Ideal for vCards, long texts, and structured data.
Long URL or full vCard
Multiple NDEF records
Password protection
NTAG424 DNA
256 bytes
The most secure chip. Anti-cloning, cryptographic authentication, ideal for access badges.
AES-128 encryption
SUN — unique code per scan
Hardware anti-cloning
Mifare Classic 1K
1,024 bytes
Industry standard for access control. Compatible with most existing systems.
16 sectors of 64 bytes
Compatible with Mifare readers
Key-based authentication
Automated process
Encoding is integrated into the production workflow
No encoding equipment needed, no operator required. NFC encoding is done automatically after printing, within the same production workflow.
Each card is individually encoded based on data transmitted via the API. Encoding is automatically verified before shipping.
- Individual encoding — each card is unique
- Automatic read/write verification
- Automatic re-encoding on failure
Encoding types
Encode whatever you need
Custom URL, unique UID, secure authentication — each chip can be encoded differently.
Custom URL
Each card redirects to a unique URL. Perfect for digital profiles, product pages, or activation forms.
https://votre-domaine.com/{id}
UID & raw data
Retrieve the unique UID of each NFC chip, or write raw data (NDEF records) according to your specifications.
UID: 04:A3:2B:1C:D5:E6:80
Secure authentication
With NTAG424 DNA: SUN (Secure Unique NFC), cryptographic signature, anti-cloning. Perfect for access badges and strong authentication.
AES-128 + CMAC signature
Advanced security
NTAG424 DNA — anti-cloning and authentication
The NXP NTAG424 DNA chip is the gold standard for applications requiring a high level of security. Each NFC tap generates a unique message that is impossible to reproduce.
- SUN (Secure Unique NFC) — each scan generates a unique code
- AES-128 encryption — data protected for reading and writing
- CMAC signature — server-side verifiable authenticity
- Hardware anti-cloning — impossible to copy the chip
- Read counter — detect abnormal usage
NTAG424 use cases
Secure access badges
Physical access control with strong authentication
Charging stations
Identification and payment via NFC badge
Product authentication
Anti-counterfeiting for luxury goods
Anti-fraud ticketing
Tickets that are impossible to duplicate
Applications
What is NFC encoding used for?
Digital profile
One tap = personalized web page with contact details, social media, portfolio.
Access control
Access badge for premises, events, restricted areas. Compatible with NFC readers.
Charging & payment
Badge identification for charging stations, vending machines, cash registers.
Product activation
The customer scans their card to activate a service, unlock content, or sign up.
Authentication
Anti-counterfeiting, proof of authenticity, provenance certification.
Membership card
Member identification, access to benefits, points accumulation.
Geolocated check-in
On-site NFC clocking, proof of presence, activity tracking.
Digital twin
Every physical object linked to its digital identity via the NFC chip.
The encoding lives on a PVC card: printed from a single unit from €7.90 excl. VAT, chip included in the price.
These same chips go into access badges and employee badges, encoded during production.
Printags has been a member of the NFC Forum since 2024 — the global organization that defines NFC standards.
Frequently asked questions
FAQ — NFC Encoding
Which NFC chip should I choose?
NTAG213 for simple URLs and digital business cards. NTAG216 if you need more memory (full vCards, long texts). NTAG424 DNA for advanced security (anti-cloning, authentication). Mifare 1K for compatibility with existing access control systems.
Is encoding included in the price?
NFC encoding is included in the card price. No additional fees for encoding. Only the NFC chip surcharge is added to the basic PVC card price.
How do I transmit the data to encode?
Via the REST API. When creating an order, you specify the chip type and the data to encode (URL, NDEF records, security parameters). Full documentation is available at docs.printags.com.
Is encoding verified?
Yes, every encoded card is automatically tested for reading and writing after encoding. If encoding fails, the card is automatically re-encoded. The final failure rate is 0%.
Can I mix NFC and non-NFC cards in the same order?
Yes, each card in an order can be different: plain PVC, NTAG213, NTAG216, etc. The unit price adjusts automatically based on the chip type chosen.
Are NFC cards compatible with all smartphones?
Yes, all NTAG chips (213, 216, 424) are compatible with all NFC smartphones (iPhone and Android). Mifare 1K is compatible with dedicated Mifare readers.
Ready to encode your first NFC cards?
NFC encoding is included in all our plans. Get started now.