> ## Documentation Index
> Fetch the complete documentation index at: https://betterdatainc.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Signal tags

# Signal Tags

Physical product authentication integrated with the Better Data platform — scan events that trigger **compliance and brand-protection loops**.

## What are Signal Tags?

Signal Tags are scannable identifiers (QR, NFC, barcode) bound to **verifiable** product identity and provenance. Each resolution is backed by structured records suitable for regulated supply chains and anti-counterfeit programs.

## How Signal Tags connect to the platform

A Signal Tag interaction is a **loop trigger**.

**Pharmaceutical serialization (illustrative)**\
Pharmacist scans a package → verification API returns status → on **failed** or **recalled**, a **quarantine / investigation** loop opens with evidence attached.

**Luxury / brand protection (illustrative)**\
Consumer scans → **authentic** vs **counterfeit** outcome → counterfeit path can start a **brand protection** loop for enforcement workflows.

## Verification flow

1. Client obtains tag id from scan.
2. Call the verification HTTP API hosted at **verify.betterdata.co** (or your self-hosted deployment).
3. Receive a structured response with `status` (for example `authentic`, `tampered`, `expired`, `recalled`) plus timestamps and correlation metadata.

<Note>
  Exact path and JSON shape depend on your contract version. Use **`@signal-tags/schema`** (or **`@signal-tags/sdk`**) for JSON Schema–aligned payloads and validation.
</Note>

## Compliance context

The hosted platform is designed to support regimes that require **serialization, authentication, and traceability**, including:

* DSCSA (US pharmaceutical supply chain)
* EU FMD
* FDA UDI (medical devices)
* GS1 GTIN compatibility

Always validate against your legal and regulatory program — docs here describe architecture, not legal advice.

## OSS vs hosted

|                   | OSS                                           | Hosted                                               |
| ----------------- | --------------------------------------------- | ---------------------------------------------------- |
| Schema & fixtures | `@signal-tags/*` · [tagd.sh](https://tagd.sh) | N/A                                                  |
| Verification API  | Self-hosted endpoint you operate              | [verify.betterdata.co](https://verify.betterdata.co) |

→ [Signal Tags OSS](/oss/signal-tags)\
→ [Signal Tags integration](/integrations/signal-tags)