> For the complete documentation index, see [llms.txt](https://docs.verygoodsecurity.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verygoodsecurity.com/vault/developer-tools/vgs-show/ios-sdk/index.md).

# Overview

**VGS Show iOS SDK** allows you to securely reveal data for your users without having to have that data pass through your systems. It provides customizable UI elements for showing users' sensitive data securely on iOS devices.

![](/files/0K1MK3CeEZGm60ai09zN) ![](/files/NfmoODIS3uoTygVgJEbi)

## A note about data security compliance

Companies that store, transmit, or process sensitive card data, including the primary account number (PAN), expiration date, and card verification value (CVV2), must comply with the Payment Card Industry Data Security Standard (PCI DSS).

Achieving PCI DSS certification without Very Good Security is both time consuming and expensive. VGS Show SDK offloads the PCI compliance burden (for certain use cases) by enabling the encrypted transmission of sensitive card data from Very Good Security directly to your cardholder or a PCI compliant processor. Very Good Security is fully PCI-Level 1 compliant and handles sensitive card data transactions for you so that your servers never store, transmit, or process the card data.

## Features

> Before you start, check our [best practices](/vault/developer-tools/vgs-show/security-checklist.md) to ensure secure configurations.

## Next steps

* [How to integrate VGS Show iOS SDK](/vault/developer-tools/vgs-show/ios-sdk/integration.md)
* [UI Components](/vault/developer-tools/vgs-show/ios-sdk/ui-components.md)
* [Data Revealing](/vault/developer-tools/vgs-show/ios-sdk/reveal-data.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.verygoodsecurity.com/vault/developer-tools/vgs-show/ios-sdk/index.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
