Steam will soon require the highest level of account security for instant trades.

Use a Steam Guard Mobile Authenticator to secure your account and get a discount in the Market and instant trades.
Get a discount in the Market

Enable the Mobile Authenticator and you’ll be eligible for a 5% - 33% discount in the Community Market until Dec 16, 2015 at 10am PST.

Discount will not affect seller.
Avoid trade holds

Starting Dec 9, anyone losing items in a trade will need to have a Steam Guard Mobile Authenticator enabled on their account for at least 7 days. Otherwise, to protect against unauthorized trades, items will be held by Steam for up to 3 days before delivery. Read the FAQ

New! Trade and Market Confirmations

Now you can confirm trades and market sales through the Steam Mobile App. Ensure items never leave your account without your approval.

New! Steam Guard Mobile Authenticator

Get the best level of Steam account protection with the Steam Mobile App. Use the app to enable your phone as a Steam Guard Mobile Authenticator to verify your identity. The authenticator generates a code that you need to enter every time that you log on to your Steam account. The code changes every 30 seconds, can be used only once, and is unguessable.

FAQ Setup Guide

Chat with friends

Keep up with friends while on the go. Chat with friends from anywhere.

Shop the catalog

Browse the Steam catalog of Windows, Mac, and Linux titles from your phone. Never miss a sale again.

Remotely download

Remotely download and install your purchases straight to your PC at home.

Steam Guard

Enable your phone as a Steam Guard Mobile Authenticator for the best level of Steam account security.

Don't have a smart phone?

You can still add a phone number to your Steam account for additional security. This will help you recover your account or reset your password in the future.

Read the FAQ

What happens if I lose my phone? What happens if I get a new phone? Read the full FAQ here.