Call of Duty: Infinite Warfare - Digital Legacy Edition for Playstation
1. click the orange button "redeem"
2. you will get you reward code via email

Please note: Only available in Germany.

Please follow these instructions to activate a new retail purchase on Steam:

1. Launch the Steam client software and log into your Steam account.
2. Click the Games Menu.
3. Choose Activate a Product on Steam...
4. Follow the onscreen instructions to complete the process.
5. Please see the Retail CD Keys article for more info on registering keys.

Find more Info here