NFC (Near Field Communication)

What is NFC and how does Near Field Communication work?

NFC is a set of standards that grew out of RFID (radio-frequency identification). It uses magnetic induction between two loop antennas: the active device, usually a phone or a payment terminal, generates a radio-frequency field at 13.56 MHz, and the second device or tag couples into that field. Because the field drops off sharply with distance, NFC only works at very close range, in practice up to about 4 cm. That short range is a design choice, not a weakness: a connection only happens when someone deliberately brings the two objects together.

The technical basis is defined in ISO/IEC 18092 and ISO/IEC 14443, and the NFC Forum, an industry body founded in 2004 by Nokia, Philips and Sony, publishes the specifications that make devices and tags interoperable. Data rates are modest (106, 212 or 424 kbit/s), which is fine because NFC is meant for short messages such as a web address, a payment token or a pairing key, not for transferring files.

A passive NFC tag has no battery. It draws the energy it needs from the phone’s field, wakes up, and returns the data stored on it. This is why an NFC chip can sit inside a sheet of paper for years and still work the first time someone taps it. The details of chips, memory and tag types are covered in our entry on the NFC tag.

What are the three NFC operating modes?

NFC devices can work in three modes. Each is used for different everyday tasks:

• Reader/writer mode: the phone reads data from a passive tag, or writes data to it. This is the mode used in print, packaging and posters.
• Card emulation mode: the phone behaves like a contactless smart card. Apple Pay, Google Pay, transit cards and digital car keys rely on this.
• Peer-to-peer mode: two active devices exchange data directly. It was used for features like Android Beam, which Google removed in Android 10, and plays a small role today.

Which smartphones support NFC?

Practically all current Android smartphones and every iPhone from the iPhone 7 onward contain an NFC controller. The difference lies in what the phone does with a tag. Android phones with NFC switched on (the default on most models) read a tag and open the stored web address whenever the screen is unlocked.

On iOS, Apple opened NFC tag reading to apps with iOS 11. Since the iPhone XS and XR, iPhones also read NFC tags in the background: the user holds the phone near the tag and a notification appears that opens the link, with no app involved. Older iPhones (7 to X) need an app or an alternative route to reach the content. For campaigns this means the large majority of recipients can tap, and a printed QR code next to the NFC zone covers the rest.

How is NFC used in marketing and print?

In marketing, NFC is almost always used in reader mode: a passive tag is embedded in a physical object and stores a URL. When someone taps the object with their phone, the browser opens that URL. Typical carriers are mailings, brochures, business cards, packaging, event invitations, point-of-sale displays and product labels.

The value for marketers comes from what sits behind the URL. Because every tap is a web request, it can be logged with a timestamp, device type and approximate location, and the destination can be changed after printing without touching the physical piece. This turns print from a one-way medium into a channel that can be measured, which is the basis of interactive direct mail. The tap itself is quick: no camera, no aiming, no app download.

NFC also has clear limits. Each piece needs a chip, so the unit cost is higher than for a printed code. Metal surfaces and foil can detune the antenna unless special tags are used. And some recipients do not know that paper can be tapped, so the piece needs a visible tap icon and a short instruction.

How do you measure NFC campaigns?

An NFC tag on its own does not count anything. Measurement happens on the server that answers the tap. The usual approach is to encode each tag with a unique or campaign-specific URL that routes through a tracking platform before the content loads. From that, you get taps per piece or per batch, repeat taps, time spent in the experience, the content people opened, and the actions they completed, such as a form or a booking.

If each piece carries a unique identifier tied to a mailing list, taps can be attributed to individual recipients and passed to a CRM, subject to the consent and data-protection rules that apply in your market. Our blog post on NFC vs. QR vs. AR mailings compares how the three formats can be tracked.

How does Interactive Paper use NFC?

Interactive Paper embeds NFC directly into paper, so a mailing or card looks and feels like premium print but opens a digital experience when tapped. Tap is the core NFC product: one tap opens a browser-based experience with video, 3D or augmented reality, and every interaction is recorded in the Let’s interact dashboard. Tap Premium uses a thicker board and finishes such as foil and embossing for high-value sends.

Interactive Paper Touch goes a step further and uses conductive ink printed inside the paper to create several touch buttons, each leading to different content. Across campaigns, Interactive Paper reports an average response rate of about 36% for Tap (vendor-reported). The content behind the chip can be edited at any time, so a printed piece stays current for the life of the campaign.

Frequently asked questions