What Makes a Payment Card Different

Unlike a plain ID card, a payment card carries both a contact module (EMV) and a contactless antenna (NFC), must pass electrical and mechanical specs, and is audited by the scheme (Visa, Mastercard, UnionPay). Every step is documented and sampled.

Core Process Flow

A typical dual-interface card moves through laminating the antenna, milling the cavity, embedding the module, printing and personalizing, then finishing and testing.

• Antenna lamination: embed the NFC coil between core sheets.
• Cavity milling: route the precise pocket for the module.
• Module embedding: flip-chip or wire bond placed and secured.
• Offset / digital printing of the card face and security features.
• Personalization: encode the EMV applet and print the PAN.
• Electrical test: contact and contactless read at defined distances.

Antenna Tuning & Compliance

The NFC antenna must be impedance-matched so the card is read reliably by POS terminals yet stays inside field-strength limits. Final cards are sampled for torsion, temperature cycling and magnetic-stripe (if present) checks.

Dual-interface payment card production and testing equipment.

Selection Quick Reference

Build payment cards as a controlled, sampled process: antenna tuning and final electrical test are the two gates that protect scheme approval and real-world acceptance at the terminal.