nfc · qr · 3d-printable · any phone reads it · android writes it

~ Tilde

Tilde makes everyday things you can tap or scan.

Hold your phone to one, or point its camera at the code, and your phone does something useful: it saves a contact, joins the Wi-Fi, opens a link, books a meeting. You print them yourself, then choose what each one opens with the Tilde app.

The Tilde booth table: the two giveaway boxes open with their eight stacks of base tags and the fob storage box open with its four stacks of fobs, beside the closed cards-only box and the 5- and 3-card pocket cases.

what it’s for

every use case →

the family

Print a few, tag everything. Any phone reads them; the app writes them. Tilde is Android only for now, and your iPhone reads every tag.

how every tilde works

  • Scan: any phone’s camera reads a printed code. No app needed.
  • Tap: an NFC sticker sits inside, under the tap icon. Hold the back of the phone flat on the icon, within 1–2 cm.
    • iPhone XS or newer: reads a tap with the screen on, with no app and no setting. A link comes up as a notification. Not while Camera or Wallet is open.
    • iPhone 7 to X: open the NFC reader in Control Center first.
    • Android: NFC must be on, and the phone unlocked. A link opens. A contact card offers to save it. Guest Wi-Fi offers Connect.
  • Write: the sticker can be rewritten any time, through the plastic.
    • Android: Tilde for Android’s Write a sticker. It writes a link, your contact card, or your guest Wi-Fi. Notes and lists, and a package tag, are coming in the next app update.
    • iPhone: Tilde is Android only for now. To write a link from an iPhone, use the free NFC Tools app.
  • What an iPhone does with a tap:
    • A link: opens it.
    • A contact card: if iPhone users will tap it, write a link instead (your website or a contact page): iPhones open links from a tap. To save your contact, an iPhone scans your phone’s code.
    • Guest Wi-Fi: an iPhone joins by scanning the Wi-Fi code.
    • A note or a list (coming in the next app update): a tap opens the note page, with no app.
    • A package tag (coming in the next app update): a page says what the tag is. Only its owner’s phone opens the package list.
  • Which sticker: a round NFC sticker, 25 mm. An NTAG216 holds a full contact card; an NTAG215 is fine for a link or your guest Wi-Fi. Search “NTAG216 25mm round NFC sticker”.
  • Anything on a sticker or a printed code is public: anyone who taps or scans it can read it. Write only what you’d put on a poster.

make your own

  • Get the files: every model is free on GitHub, at github.com/tbutman/tilde-card: MIT in the repo, CC BY 4.0 on MakerWorld. Open a model in OpenSCAD’s Customizer, type your settings (your link, your colors, your icon), export it, and print it with the steps in PRINTING.md.
  • In color: export a 3MF, not an STL: the colors are flush inlays, and an STL merges them into one plain piece. A recent OpenSCAD development snapshot keeps the colors in the 3MF; open it in Bambu Studio and choose the process again.
  • MakerWorld’s Model Maker is the same customizer in your browser: you change the settings and download a 3MF that’s ready to print. The Tilde listings on MakerWorld aren’t public yet; when they are, each product links its listing here.
  • You’ll need a 3D printer (a multi-color one, such as a Bambu Lab printer with an AMS, for anything in more than one color), PLA, and round NFC stickers. Each product’s What you need lists the rest.
  • Printable now: the Tilde Card, the fobs, the Retro handheld (Base), the sticky note, the grocery list, the calendar, the Wi-Fi coaster and the Tilde Stand. Coming soon: the Stand Mini’s files, and the Premium handheld. Writing notes and lists from the app comes in the next app update.

No 3D printer? Ask a friend or a makerspace (most have one), or pick one up at the Tilde booth at Web Summit, Lisbon, November 9–12.

the tilde booth

Web Summit, Lisbon, November 9–12.

The Tilde booth table: the two giveaway boxes open with their eight stacks of base tags and the fob storage box open with its four stacks of fobs, beside the closed cards-only box and the 5- and 3-card pocket cases.

Four short tours of everything Tilde makes.