Smart Poster

What Is a Smart Poster?

A NDEF record combining URI with title and action metadata" data-category="NDEF">Smart Poster is a compound NDEF record (TNF 0x01, type "Sp") that bundles a URI record with optional title, recommended action, icon, and size metadata. The Smart Poster format delivers a richer tap experience than a standalone URI by providing the OS with display and behavior hints.

Structure

A Smart Poster record contains a nested NDEF message:

Outer Record (type: "Sp")
  +-- URI Record (mandatory) — target URL
  +-- Text Record(s) (optional) — title/description
  +-- Action Record (optional) — Do/Save/Open
  +-- Size Record (optional) — content size hint
  +-- Type Record (optional) — target MIME type

Action Record Values

Smart Poster vs Plain URI

Memory Considerations

Smart Posters consume significantly more user memory than plain URIs:

• Plain URI https://example.com: ~20 bytes
• Smart Poster with URI + English title: ~45 bytes
• Smart Poster with URI + 3 language titles + action: ~90 bytes

On NTAG 213 (144 bytes), a multilingual Smart Poster may consume most available space.

Platform Support

Android: Full parsing. Title displays in NFC scan notification; URI opens on tap. Language selection matches device setting.

iOS: Extracts the URI and handles it as a standard URL. Title text is not displayed by the native handler, though Core NFC apps can access all sub-records.

When to Use

Use Smart Poster for marketing tags needing branded titles, multilingual deployments (tourism, museums), or app-directed taps combined with AAR. For simple link delivery, a plain URI record is more efficient.