> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/psdk-latest/psdk-user-guide-and-training/psdk-user-guide/solution_overview.md).

# Solution Overview

This section gives a high level overview of what the payment solution offers

## Architecture <a href="#architecture" id="architecture"></a>

### Semi Integration Mode <a href="#semi-integration-mode" id="semi-integration-mode"></a>

The payment device contains a complete payment application which interfaces to a ECR/POS system.

![](/files/HaJXvHOeskMHgeXwFRhb)

### Slim Integration Mode <a href="#slim-integration-mode" id="slim-integration-mode"></a>

In the slim-integrated model, supported only by the Android terminal, the payment application no longer communicates directly with the host, but rather sends a transaction details for host authorization/finalization to the POS application, which manages the host interactions.

![](/files/enpRuNH2xA6EnamKhs6l)

### Fully Integration (FI) Mode <a href="#fi-mode" id="fi-mode"></a>

In FI mode, the POS application has greater interaction with the POI throughout the course of the transaction. Unlike Semi Integration — where the payment application manages the complete transaction flow — and Slim Integration — where the SDK delegates only host authorization to the POS — FI allows the POS to actively participate at each stage: retrieving card entry data, handling host authorization, and in the case of Contact EMV, also updating transaction data and driving cryptogram generation (First Gen AC / Second Gen AC).

![](/files/enpRuNH2xA6EnamKhs6l)

{% hint style="info" %}
FI mode requires PSDK 3.69.0 or later with the AGPA FI interface enabled on the terminal. If `getFiManager()` returns `null`, FI is not available on the current device or configuration.
{% endhint %}

***

## Supported Platforms <a href="#supported-platforms" id="supported-platforms"></a>

<table data-header-hidden data-full-width="false"><thead><tr><th width="105" valign="top">Platform</th><th width="447" valign="top">Platform Requirements</th><th valign="top">Languages</th></tr></thead><tbody><tr><td valign="top">Android</td><td valign="top"><p>Minimum Android SDK Version 24 (Nougat 7.0)</p><p>Target Android SDK Version 28 (Pie 9.0)</p><p>Architectures ABI: x86, x86_64, armeabi-v7a, arm64-v8a</p></td><td valign="top">Java/Kotlin API</td></tr><tr><td valign="top">iOS</td><td valign="top"><p>Minimum iOS version 12.0</p><p>Architectures: arm64, arm64e</p></td><td valign="top">Obj-C/Swift API</td></tr><tr><td valign="top">Windows</td><td valign="top"><p>Windows Dot Net</p><p>Architectures: x86, x86_64</p></td><td valign="top">C# API</td></tr><tr><td valign="top">Linux</td><td valign="top"><p>GLIBC 2.36</p><p>Architectures: x86, x86_64</p></td><td valign="top">C++ API</td></tr><tr><td valign="top">Java</td><td valign="top"><p>Windows Minimum Version 10</p><p>Linux with GLIBC 2.36</p><p>Architectures: x86, x86_64</p></td><td valign="top">Java API</td></tr></tbody></table>

### Communication Channels <a href="#communication-channels" id="communication-channels"></a>

| Platform | TCP/IP                           | USB | USB Serial                       | BT | BT Serial |
| -------- | -------------------------------- | --- | -------------------------------- | -- | --------- |
| Android  | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |     |                                  |    |           |
| iOS      | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |     | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |    |           |
| Windows  | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |     | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |    |           |
| Linux    | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |     | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |    |           |
| Java     | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |     | ![](/files/HK3lMEQ3xQcLE7ydYdhX) |    |           |

***

{% columns %}
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<figure><img src="/files/9ezXRridnCaI1awLr3X9" alt="" width="150"><figcaption></figcaption></figure>
{% endcolumn %}

{% column width="25%" %}

{% endcolumn %}

{% column width="16.66666666666666%" %}
**Version:**\
**Date:**
{% endcolumn %}

{% column width="33.333333333333336%" %} <code class="expression">space.vars.psdk\_version</code>\ <code class="expression">space.vars.psdk\_date</code>
{% endcolumn %}
{% endcolumns %}


---

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