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

# Interactive Demo

> Experience encrypted receipts in a simulated banking app

<Card title="Open Demo in New Tab" icon="arrow-up-right-from-square" href="https://www.digitalreceiptprotocol.org/#demo" target="_blank">
  Launch the full-screen interactive banking app demo
</Card>

***

## Key Security Features

<CardGroup cols={2}>
  <Card title="Client-Side Decryption" icon="lock">
    Private keys never leave the device. Decryption happens in Secure Enclave.
  </Card>

  <Card title="Biometric Authentication" icon="fingerprint">
    Face ID/Touch ID required to access receipts.
  </Card>

  <Card title="End-to-End Encryption" icon="shield-halved">
    Receipts encrypted before transmission. Only you can decrypt.
  </Card>

  <Card title="Cryptographic Signatures" icon="signature">
    Dual signatures from merchant and issuer prevent tampering.
  </Card>
</CardGroup>

***

## What Customers See

**Transaction List**

* All card transactions from statement
* DRP-enabled transactions show "Receipt" indicator
* Tap any transaction to see details

**Receipt Details**

* Merchant info, itemized breakdown, payment details
* Tax information and timestamps
* Search, export, auto-categorization

***

## Use Cases

<AccordionGroup>
  <Accordion title="Business Expense Reports">
    **Before DRP:** Save paper receipt, photograph, upload, manually enter

    **With DRP:** Receipt automatically in app, one-tap export, details pre-filled
  </Accordion>

  <Accordion title="Tax Preparation">
    **Before DRP:** Search emails, download from merchants, organize, calculate

    **With DRP:** All receipts in one place, export by date/category, automatic totals
  </Accordion>

  <Accordion title="Returns & Warranties">
    **Before DRP:** Find paper receipt (often lost), hope merchant has record

    **With DRP:** Cryptographically signed receipt, undeniable proof of purchase
  </Accordion>

  <Accordion title="Dispute Resolution">
    **Before DRP:** Remember what you bought, describe items, hope for records

    **With DRP:** Show itemized receipt with cryptographic signatures, faster resolution
  </Accordion>
</AccordionGroup>

***

## Developer Resources

<CardGroup cols={2}>
  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Complete API documentation with examples
  </Card>

  <Card title="Integration Examples" icon="brackets-curly" href="/sdks/examples">
    Code examples for JavaScript, Python, Go
  </Card>

  <Card title="Technical Flow" icon="diagram-project" href="/api-reference/technical-flow">
    Step-by-step API integration guide
  </Card>

  <Card title="Merchant Guide" icon="shop" href="/essentials/merchants">
    Integration guide for merchants
  </Card>

  <Card title="GitHub" icon="github" href="https://github.com/digitalreceiptprotocol">
    Contribute to open-source
  </Card>

  <Card title="LLM Context" icon="robot" href="https://docs.digitalreceiptprotocol.org/llms.txt">
    AI-friendly documentation for LLMs
  </Card>
</CardGroup>