> For the complete documentation index, see [llms.txt](https://smartpossdk.gitbook.io/paywizard-open-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smartpossdk.gitbook.io/paywizard-open-api/semi-integration/local-integration.md).

# Local Integration

## For Serial / Socket Connection, you will need to follow 

{% content-ref url="/pages/YFkslvGao74kND2z4EvU" %}
[Payment App Integration Protocol](/paywizard-open-api/semi-integration/local-integration/payment-app-integration-protocol.md)
{% endcontent-ref %}

## Best Practice

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td><strong><code>Serial Connection Best Practice</code></strong></td><td><a href="/pages/wu08XqmxshYSEKYmZAuh">/pages/wu08XqmxshYSEKYmZAuh</a></td><td><a href="/files/A0YSOfBHexTokXqBu4DI">/files/A0YSOfBHexTokXqBu4DI</a></td></tr><tr><td><strong><code>Socket Connection Best Practice</code></strong></td><td><a href="/pages/qzI2i4BhEqtK2PCX79Ek">/pages/qzI2i4BhEqtK2PCX79Ek</a></td><td><a href="/files/QzDhjVAtdGZPuz5WVufq">/files/QzDhjVAtdGZPuz5WVufq</a></td></tr><tr><td><strong><code>MDB Connection Best Practice</code></strong></td><td><a href="/pages/ASMlhisosVh6jsn7EfcR">/pages/ASMlhisosVh6jsn7EfcR</a></td><td><a href="/files/OQ5rYiqoDqJR5NWmQmzF">/files/OQ5rYiqoDqJR5NWmQmzF</a></td></tr></tbody></table>