---
title: "Building a sample ASM for Android"
slug: "dpo-authenticator-sdk-for-android-building-the-sample-asm"
updated: 2026-10-27T20:13:21Z
published: 2026-10-27T20:13:21Z
canonical: "docs.onespan.com/dpo-authenticator-sdk-for-android-building-the-sample-asm"
---

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

# Building a sample ASM for Android

## Overview

The Authenticator SDK allows you to build Sample ASM using the NNL FIDO Crypto Module

The NNL FIDO Crypto Module can be used during development of your ASM. After building the ASM, you’ll need to test it as detailed in [Testing the completed Authenticator for Android](/dpoa/docs/dpo-authenticator-sdk-for-android-testing-the-completed-authenticator).

## Building Sample ASM with the NNL FIDO Crypto Module

To build Sample ASM with the NNL FIDO Crypto Module using Android Studio, launch Android Studio and select the **Open an existing Android Studio project** option. In the **Open File or Project** dialog, select the path of the build.gradle file of the asm_sample_service project from the extracted <ASM_SDK_HOME>/android-studio folder as shown in the following screenshot:

![](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/image3(5).png?sv=2026-02-06&spr=https&st=2026-10-29T02%3A34%3A12Z&se=2026-10-29T03%3A34%3A12Z&sr=c&sp=r&sig=h4gyo7mMQLySXBE9Xh4JVJIRW3AME2JGx7xEAN3En6o%3D)

After importing the Sample ASM project, the project window will appear similar to the following screenshot:

![](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/image2(5).png?sv=2026-02-06&spr=https&st=2026-10-29T02%3A34%3A12Z&se=2026-10-29T03%3A34%3A12Z&sr=c&sp=r&sig=h4gyo7mMQLySXBE9Xh4JVJIRW3AME2JGx7xEAN3En6o%3D)

After building the project, Sample ASM is ready to run on the Android emulator or on an actual device.