[Android Components](../../README.md) > Samples > Firefox Relay

Concepts

The main concepts shown in the sample app are:

• Usage of the FxRelay component.
• Login to Firefox Accounts that provides the session token to access Relay api's.
• Getting the list of RelayAddress from the RelayClient.

License

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/