Steam Guard is a mobile authentication system designed to protect Steam accounts and enable instant trading on the Steam marketplace. It's especially crucial for players who trade valuable in-game items in CS2, Dota 2, and TF2, where inventories can be worth thousands or even millions of dollars.

Steam Guard provides two key benefits:

1. Enhanced Security:

• Prevents unauthorized access and account theft
• Requires mobile verification for important account actions
• Links your phone number to your Steam account
• Sends authentication codes for transaction approval

2. Instant Trading Capability:

• Eliminates the standard 2-week waiting period for marketplace listings
• Allows immediate listing and selling of items
• Helps capitalize on current market prices
• Enables quick response to market fluctuations

The Steam Mobile app is required to use Steam Guard. After installation, you'll receive authentication codes for identity confirmation when performing important actions.

Setting up Steam Guard:

1. Login to your Steam account
2. Click your username in the top-right corner
3. Select "Account Details"
4. Find "Contact Information" section
5. Click "Add Phone Number"
6. Enter your phone number and verify via SMS
7. Follow Steam's setup guide to complete installation

Important: Save your recovery code after setup - you'll likely need it later. While the authentication process may seem cumbersome at first, this extra security layer is invaluable for protecting your Steam assets.

For additional support or concerns about sharing your phone number, contact Steam support or visit their help center for detailed information.

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