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

# Store Tags

> Verify the authenticity and provenance of your physical assets with NFC-powered Store Tags

<Badge icon="star" color="orange" size="md" shape="pill">Pro</Badge>

## Overview

Store Tags are physical NFC tags that you attach to your items to verify authenticity, prove ownership, and track provenance. When scanned with your phone, a Store Tag cryptographically confirms the item is genuine and hasn't been tampered with.

<Warning>
  **Pro Subscription Required**: Store Tags and the verification system are available exclusively to Pro and Lifetime subscribers.
</Warning>

## Why Store Tags?

<CardGroup cols={2}>
  <Card title="Cryptographic Verification" icon="shield-check">
    Each tag uses AES-128 encryption to prove authenticity — no counterfeiting possible
  </Card>

  <Card title="Tamper Detection" icon="lock">
    Enterprise tags detect physical tampering with hardware tamper loops
  </Card>

  <Card title="Provenance Tracking" icon="clock-rotate-left">
    Build a complete verification history for every item over time
  </Card>

  <Card title="Risk Scoring" icon="gauge">
    Automatic risk assessment flags suspicious activity like cloned tags or impossible travel
  </Card>

  <Card title="Estate & Insurance" icon="file-contract">
    Verified items strengthen insurance claims and estate documentation
  </Card>

  <Card title="Works Offline" icon="wifi-slash">
    Scan tags with any NFC-enabled smartphone — no app required
  </Card>
</CardGroup>

## How Store Tags Work

Store Tags use **NFC (Near Field Communication)** technology — the same technology behind contactless payments. Each tag contains a unique identifier linked to your item in Storehouses.

### Verification Levels

| Level             | Tag Type     | Security                                                       | Staleness |
| ----------------- | ------------ | -------------------------------------------------------------- | --------- |
| **Cryptographic** | NTAG 424 DNA | AES-128 CMAC authentication, rolling counter, tamper detection | 180 days  |
| **NFC Scan**      | NTAG 213     | UID verification against registry                              | 90 days   |
| **Manual**        | Photo/visual | User-submitted photo verification                              | 30 days   |

### What Happens When You Scan

1. You tap your phone to the Store Tag on your item
2. The tag transmits an encrypted message with a rolling counter
3. Storehouses verifies the cryptographic signature server-side
4. You see a verification result with a confidence score and risk assessment

<Note>
  Enterprise Store Tags (NTAG 424 DNA) use the same cryptographic protocol as contactless payment cards. Each scan produces a unique, non-replayable proof of authenticity.
</Note>

## Getting Started

### Ordering Store Tags

Store Tags are available in three pack sizes:

| Pack        | Best For                                                   |
| ----------- | ---------------------------------------------------------- |
| **5 tags**  | Getting started with your most valuable items              |
| **15 tags** | Active collectors with growing portfolios                  |
| **30 tags** | Large collections or estate managers with multiple clients |

To order:

<Steps>
  <Step title="Go to Verification">
    Navigate to [storehouses.app/verification](https://storehouses.app/verification)
  </Step>

  <Step title="Click 'Order Tags'">
    Select your preferred pack size
  </Step>

  <Step title="Complete Checkout">
    Purchase through Stripe Checkout (payment is secure and PCI compliant)
  </Step>

  <Step title="Receive Your Tags">
    Tags ship to your address and arrive pre-programmed and ready to use
  </Step>
</Steps>

### Claiming a Tag

When your tags arrive, you need to claim them to link them to your account:

<Steps>
  <Step title="Scan the Tag">
    Hold your phone near the Store Tag — your browser opens the claim page automatically
  </Step>

  <Step title="Sign In">
    Log in to your Storehouses account if not already signed in
  </Step>

  <Step title="Confirm Claim">
    The tag is now linked to your account and ready to assign to an item
  </Step>
</Steps>

### Pairing a Tag to an Item

<Steps>
  <Step title="Go to Verification">
    Navigate to the **Untagged Items** tab on the Verification page
  </Step>

  <Step title="Find Your Item">
    Search or browse your untagged items
  </Step>

  <Step title="Click 'Pair Tag'">
    Hold the Store Tag near your phone when prompted to write the item's registry ID
  </Step>

  <Step title="Attach the Tag">
    Physically attach the Store Tag to your item (adhesive backing, display case, storage container, etc.)
  </Step>
</Steps>

## Verification Page

Access your verification dashboard at [storehouses.app/verification](https://storehouses.app/verification). The page has four tabs:

### Scan Tag

Scan any Store Tag to verify an item. The scanner automatically detects the tag type and routes to the appropriate verification method.

After scanning, you see:

* **Verification status** — Verified, Caution, Warning, or Alert
* **Risk score** — 0.00 (no risk) to 1.00 (high risk) with color-coded indicator
* **Confidence level** — Based on tag type and verification method
* **Anomaly flags** — Any detected issues (counter rollback, impossible travel, rapid scanning)

### Manage Tags

View all your Store Tags with their current status:

* **Active** — Tag is paired with an item and working normally
* **Disabled** — You've temporarily disabled the tag
* **Lost** — You've reported the tag as lost
* **Compromised** — The system detected potential cloning or tampering

From this tab you can rename, reassign, disable, or remove tags.

### Untagged Items

Browse items in your portfolio that don't have a Store Tag assigned. Use the "Pair Tag" button to assign a tag to any item.

### Event History

View a complete timeline of all verification events across your portfolio. Each event shows:

* Timestamp and verification method
* Confidence level and risk score
* Any anomaly flags that were triggered
* The item and tag involved

## Risk Scoring

Every scan produces a risk score from **0.00** (no risk) to **1.00** (high risk):

| Score       | Level        | Meaning                                      |
| ----------- | ------------ | -------------------------------------------- |
| 0.00 – 0.15 | **Verified** | Cryptographic confidence — item is authentic |
| 0.15 – 0.30 | **Verified** | Standard confidence                          |
| 0.30 – 0.50 | **Caution**  | Review recommended                           |
| 0.50 – 0.70 | **Warning**  | Significant anomalies detected               |
| 0.70 – 1.00 | **Alert**    | Likely clone or tamper detected              |

### What Affects the Score

**Lowers risk (good):**

* Successful cryptographic verification (strongest signal)
* Valid rolling counter
* Tamper loop intact
* Scan location matches expected area
* Photo captured during verification

**Raises risk (bad):**

* Cryptographic verification failure (strongest negative signal)
* Counter rollback (suggests cloned tag)
* Tamper loop broken or changed
* Impossible travel (scanned in two distant locations too quickly)
* Rapid scanning (many scans in a short window)

## Anomaly Detection

The system automatically monitors for suspicious patterns:

| Anomaly               | What It Means                                                                                 |
| --------------------- | --------------------------------------------------------------------------------------------- |
| **Counter Rollback**  | The tag's rolling counter went backwards — strong indicator of a cloned tag                   |
| **Impossible Travel** | Tag scanned in two locations too far apart for the time elapsed (over 500 km in under 1 hour) |
| **Geo Anomaly**       | Tag scanned far from its last known location (over 100 km in under 1 hour)                    |
| **Rapid Scanning**    | 5+ scans within a 10-minute window — may indicate automated cloning attempts                  |
| **Counter Gap**       | Large gap in counter values suggests unreported scans                                         |

<Warning>
  If a tag accumulates more than 3 anomalies, it is automatically marked as **compromised** and disabled for security. Contact support if you believe this is in error.
</Warning>

## Tag Lifecycle

Store Tags move through these states:

```
Provisioned → Shipped → Claimed → Active
                                     ↓
                           Disabled / Lost / Replaced
                                     ↓
                              Decommissioned
```

* **Provisioned** — Tag manufactured and cryptographic keys loaded
* **Shipped** — Tag sent to you
* **Claimed** — You scanned and linked the tag to your account
* **Active** — Tag is paired with an item and in use
* **Disabled** — You temporarily disabled the tag (can be re-enabled)
* **Lost** — You reported the tag as lost (prevents unauthorized use)
* **Replaced** — Old tag replaced with a new one
* **Compromised** — System detected potential cloning (automatic)
* **Decommissioned** — Permanently retired

## Staleness and Re-Verification

Verification confidence decays over time. Items should be re-scanned periodically:

| Verification Type            | Re-scan Recommended |
| ---------------------------- | ------------------- |
| Cryptographic (NTAG 424 DNA) | Every 180 days      |
| NFC scan (NTAG 213)          | Every 90 days       |
| Manual verification          | Every 30 days       |

Items that haven't been verified within their staleness window show a notification on your dashboard prompting re-verification.

## Enterprise Tags

Enterprise Store Tags use **NTAG 424 DNA** chips with advanced security features:

### Cryptographic Authentication

Each scan generates a unique, non-replayable proof using:

* **AES-128 CMAC** — Military-grade message authentication
* **Rolling counter** — 24-bit counter increments with every scan (16M+ scan capacity)
* **Session keys** — Derived uniquely per scan from the master key and counter
* **Encrypted UID** — Tag identity encrypted in transit

### Tamper Detection

NTAG 224 DNA StatusDetect tags include a hardware **tamper loop** — a physical wire that detects if the tag has been removed or the item opened. If the loop is broken:

* The tag reports `tampered` status
* Risk score increases significantly
* You receive a notification

## Best Practices

<AccordionGroup>
  <Accordion title="Tag Your Most Valuable Items First">
    Start with high-value items where provenance matters most — rare watches, fine art, precious metals, and collectible firearms.
  </Accordion>

  <Accordion title="Scan Regularly">
    Periodic scans build a verification history that strengthens provenance claims for insurance and estate purposes.
  </Accordion>

  <Accordion title="Attach Tags Securely">
    Place tags where they won't be accidentally removed but can still be scanned. Inside display cases, on storage containers, or on item packaging work well.
  </Accordion>

  <Accordion title="Report Lost Tags Immediately">
    If a tag is lost or separated from its item, mark it as lost in the Manage Tags tab to prevent unauthorized verification.
  </Accordion>

  <Accordion title="Keep Your Phone Updated">
    NFC scanning works best with up-to-date phone software. Ensure NFC is enabled in your phone settings.
  </Accordion>
</AccordionGroup>

## Troubleshooting

<AccordionGroup>
  <Accordion title="Tag won't scan">
    * Ensure NFC is enabled on your phone (Settings → NFC)
    * Hold the phone close to the tag for 2-3 seconds
    * Try different positions — NFC antennas vary by phone model
    * Remove phone case if it's thick or metallic
    * Some phones require the screen to be on and unlocked
  </Accordion>

  <Accordion title="Tag shows 'Unregistered'">
    The tag hasn't been claimed yet. Scan it while logged in to claim it to your account.
  </Accordion>

  <Accordion title="Verification shows 'Caution' or 'Warning'">
    Check the anomaly flags for details. Common causes:

    * Scanning from a new location (geo mismatch) — usually resolves on next scan
    * Long gap between scans (counter gap) — scan again to reset
    * If counter rollback or impossible travel is flagged, contact support
  </Accordion>

  <Accordion title="Tag marked as 'Compromised'">
    This happens when 3+ anomalies are detected. Contact support with your tag details — if it's a false positive, they can restore the tag.
  </Accordion>
</AccordionGroup>

## FAQ

<AccordionGroup>
  <Accordion title="Do I need a special app to scan tags?">
    No. Store Tags work with the built-in NFC reader on any modern smartphone. Scanning opens your browser automatically.
  </Accordion>

  <Accordion title="Can someone else scan my tags?">
    Anyone can scan the tag, but only you (the owner) can see the full verification details. Others see a limited verification page confirming the item is registered.
  </Accordion>

  <Accordion title="What if I sell an item with a tag?">
    You can transfer tag ownership when selling an item. The verification history transfers with it, providing provenance to the buyer.
  </Accordion>

  <Accordion title="How many tags can I have?">
    There's no limit on the number of tags per account. Order additional packs as your collection grows.
  </Accordion>

  <Accordion title="Do tags need batteries?">
    No. Store Tags are passive NFC devices powered by your phone's NFC signal. They have no batteries and last indefinitely.
  </Accordion>
</AccordionGroup>