NFC Business Cards Guide
How Does an NFC Business Card Work? The Technology Explained
An NFC business card works without an app: just hold a smartphone to the card. This guide explains how the technology actually works and what makes it different.
If you hold an NFC business card for the first time, the question is usually the same: how does this work? The card has no battery, no plug, no visible electronics — and yet a profile opens on the other person's smartphone in seconds. This guide explains the technology without diving into jargon.
What is NFC — and what does it have to do with business cards?
NFC stands for Near Field Communication. It is the same technology used for contactless payments with a smartphone or bank card. The difference: for payments, the card contains a security module for transactions. For an NFC business card, it is much simpler: the chip stores a single piece of data — usually a URL.
The range is just a few centimetres (1–5 cm), which prevents accidental reads: an NFC chip is only read when someone deliberately holds a device close enough.
The technology in detail: chip, antenna, induction
Inside every NFC business card are two components:
- The NFC chip (Glastrix uses NTAG215) — a tiny microprocessor with 540 bytes of storage. That fits a URL of up to ~490 characters or a vCard.
- The coil antenna — a thin copper wire wound around the chip. In glass and metal cards, the antenna runs invisibly laminated inside the card.
When an NFC-capable smartphone (effectively any smartphone since 2019) is held close to the card, it generates a high-frequency magnetic field (13.56 MHz). The card's antenna picks up this field, converts it into electrical energy (inductive coupling), and powers the chip — no battery needed. The chip sends its data back to the smartphone. All of this happens in under a second.
What happens on the smartphone when you tap?
On iPhones, a Safari popup automatically appears with the link — from iOS 14 onwards, without any app or action. On Android devices, the default browser opens the link as soon as the NFC reader is active (it is on most devices by default). The recipient needs to install nothing, scan nothing, type nothing.
The link typically leads to a digital business card profile: contact details, phone number, email, social media, booking link. Because it is just a URL destination, the profile can be updated at any time — job change, new phone number, new portfolio — without reprinting the card.
Which materials are suitable for NFC business cards?
NFC chips work in most materials without issues. With metal, there is one consideration: metallic surfaces can attenuate or block the magnetic field. Glastrix solves this with a special anti-metal layer in the card construction — the chip works perfectly in metal cards because it sits slightly above rather than directly on the metal surface.
- PVC — the classic. Affordable, light, NFC works without restrictions.
- Wood / bamboo — NFC compatible, organic, sustainable. Chip laminated inside the wood.
- Metal (steel, aluminium) — with anti-metal layer. The most premium feel in the hand.
- Glass — exclusive and distinctive. Chip invisibly embedded in the glass.
How is the NFC chip programmed?
The chip is "written" with a URL — either during production or afterwards via a smartphone app (e.g. NFC Tools). Glastrix cards arrive programmed with the customer's NFC profile. Anyone who wants to reprogram the card can do so with an NFC writing app — the NTAG215 chip is not write-protected unless a password has been set.
An important distinction: the card itself only stores the URL. The actual contact data sits on the server behind the link. This means: updating the server content automatically updates what every tapper sees — even if the card has been in circulation for a year.
Glastrix NFC business cards: technology meets craft
Glastrix produces NFC business cards in-house in Berlin-Kreuzberg — UV-printed on glass, metal, wood, and bamboo. The NTAG215 chip sits deep inside the material, protected by the hard surface. The cards work with iOS and Android without an app and arrive programmed with the customer's profile.
Anyone looking for an unusual NFC business card — metal instead of plastic, with individual UV printing instead of a standard layout — will find Glastrix cards available from 1 piece with no minimum order.
Frequently asked questions about NFC technology
How does an NFC business card work technically?
Inside the card sits a tiny NFC chip (Near Field Communication) connected to a coil antenna. When an NFC-capable smartphone is held close to the card, the phone generates a short-range magnetic field that powers the chip inductively and reads the stored data — no battery in the card required. In less than a second, the phone opens the stored URL, displays a digital profile, or saves the contact.
Do you need an app to read an NFC business card?
No. All iPhones from iPhone 7 (iOS 14+) and all Android smartphones with an NFC chip read NFC cards directly through the built-in NFC reader — no additional app required. The recipient does not need to install anything. This is the key difference from QR code scanners and proprietary business card platforms.
What can be stored on an NFC business card?
The chip typically stores a URL pointing to a digital profile. There, you can host contact details, social media links, portfolios, booking calendars, Google Maps links, or direct phone numbers. Because it's just a URL, the profile can be updated at any time — without reordering the card. Alternatively, a vCard (contact file) can be stored directly on the chip.
What is the difference between NFC and QR code on a business card?
NFC does not require pointing a camera — the chip works in the dark, with dirty hands, or when the card is slightly obscured. QR codes are cheaper to produce and work on any device with a camera. NFC is the more modern solution for professional contexts where speed and frictionlessness matter. Both technologies have their place; many professional cards combine both.
How long does the NFC chip in a business card last?
NFC chips have no battery and no moving parts. In practice, their lifespan is decades — as long as the chip is not mechanically damaged. Glastrix uses NTAG215 chips embedded in glass, metal, and wood: the hard surface protects the chip from damage that can occur with paper or plastic cards through bending or moisture.
Weiterführende Artikel
NFC Business Cards in Glass, Metal or Wood
Produced in-house in Berlin-Kreuzberg. UV-printed, no minimum order, NTAG215 chip pre-programmed.
No minimum order · iOS & Android · No app needed · Berlin-Kreuzberg