> 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="/paywizard-open-api/semi-integration/local-integration/serial-connection-best-practice.md">Serial Connection Best Practice</a></td><td><a href="https://2631785516-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FY7FuzH91SaNfvhwFA9Ic%2Fuploads%2FNgSvp8gz67wjJ8xaPT6p%2Fserial.png?alt=media&amp;token=6d341843-4cc7-4e63-b393-7dceffdcb73a">serial.png</a></td></tr><tr><td><strong><code>Socket Connection Best Practice</code></strong></td><td><a href="/paywizard-open-api/semi-integration/local-integration/socket-connection-best-practice.md">Socket Connection Best Practice</a></td><td><a href="https://2631785516-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FY7FuzH91SaNfvhwFA9Ic%2Fuploads%2FrGSpmlXGwqkcD0QRILX7%2Fsocket.png?alt=media&amp;token=4076c343-8714-4232-abe5-c8daf747e4b0">socket.png</a></td></tr><tr><td><strong><code>MDB Connection Best Practice</code></strong></td><td><a href="/paywizard-open-api/semi-integration/local-integration/mdb-connection-best-practice.md">MDB Connection Best Practice</a></td><td><a href="https://2631785516-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FY7FuzH91SaNfvhwFA9Ic%2Fuploads%2Fu3JdRhKExYcZqXmrOOrz%2Fmdb.png?alt=media&amp;token=8955dfb3-ba61-40bb-bfa7-591bef6d0a9d">mdb.png</a></td></tr></tbody></table>