How to Share WiFi With an NFC Tag (Step-by-Step)

The most-loved NFC use case is also the simplest: tap a sticker, join the WiFi. No password reading, no typos, no "is it a zero or the letter O?" Here's the complete setup.

What You Need

• One NFC tag (NTAG213 or NTAG215 both work — the payload is small)
• An Android phone with NFC, or iPhone with iOS 13+
• A free NFC writing app

Android Setup (3 Steps)

1. Install NFC Tools (free, Play Store)
2. Go to Write → Add a record → WiFi network → enter SSID, password, security type
3. Tap Write and hold the tag to your phone's back — done

When a guest taps the tag with an Android phone, they'll be prompted to join the network with credentials pre-filled.

iPhone Setup (3 Steps)

1. Install NFC Tools (free, App Store)
2. Same as above — Write → Add record → WiFi network
3. Hold the tag near the iPhone's top edge to write

iOS limitation: iPhones can read the tag and show the network info, but iOS doesn't auto-join WiFi from NFC (Apple restricts this system-level action). The workaround that works well: encode the tag with a URL to a simple page that displays the password for copying. Guests tap, see the password, copy, join — still far better than reading it off a router label.

Where to Place the Tag

• Cafes/restaurants: on the table or by the register, marked "Tap for WiFi"
• Hotels: on the nightstand card or desk
• Offices: in meeting rooms and lobby
• Home: by the entryway for guests

Pro Tips

• Print "Tap for WiFi" on the tag (we can do this with custom printing) — unmarked tags don't get used
• Lock the tag after writing to prevent tampering — we can deliver pre-encoded and locked
• Guest network: put visitors on a separate network from your main infrastructure

Ordering pre-encoded WiFi tags? Send us the SSID, password, and security type — we write, verify, and optionally lock the tags before shipping.