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

# Examples

> Code examples for the Dfns Kotlin SDK on Android, including passkey registration, login, signing, and delegated wallet integration.

## DfnsDemo

A demo application using the SDK can be found [here](https://github.com/dfns/dfns-sdk-kotlin/tree/main/app).

This demo application is to be used in conjunction with the Typescript server in [delegated registration and login tutorial](https://github.com/dfns/dfns-sdk-ts/tree/m/examples/sdk/auth-delegated#mobile-frontend). It is a replacement for the `Android` section over there, you should read and execute all instruction written above this section to get this demo running.

#### Configuration

In the `./app/src/main/java/co/dfns/sdk/tutorial/mobile/Constants.kt` set the following values,

* `SERVER_BASE_URL`: base url of the server you launched (eg `http://localhost:8000`, or if using ngrok, the public ngrok url)
* `PASSKEY_RELYING_PARTY_ID`: the passkey relying party id, aka, the domain on which the above server is served (Read more [here](https://developer.mozilla.org/en-US/docs/Web/API/PublicKeyCredentialCreationOptions#rp)). If serving the server on `http://localhost:8000`, then set it to `localhost`. If serving the server through ngrok (eg `https://d0d7-31-217-63-194.ngrok-free.app`), then set it to `ngrok-free.app`. In general, we advise you use the root domain (eg. `acme.com`, not `app.acme.com`) for more passkey flexibility (so that passkey is re-usable on subdomains).
* `PASSKEY_RELYING_PARTY_NAME`: A string representing the name of the relying party, aka, your company name (e.g. "Acme"). The user will be presented with that name when creating or using a passkey.