A passkey gives you a layer of security that you can use more quickly than your Microsoft email and password, and more secretly than your voice.
When you create a personal passkey, you get the following benefits:
A passkey protects against a child signing in as the parent and overriding parental controls. A personal passkey prevents a child from simply clicking on the parent’s picture, signing in as the parent, and changing the child’s otherwise parentally controlled settings.
A passkey helps to prevent unapproved charges. You can choose to require a passkey to make any purchase on Xbox Live. Setting a passkey helps prevent children from making unapproved purchases.
A passkey allows the parent to grant content exceptions. The only way for a parent to override a content limitation is by entering his or her personal passkey, so it’s easier to manage what content your children can see on your console.
Your passkey roams with you. The passkey that you set on your profile follows you to any Xbox One console you use. As long as you sign out when you leave, you can feel secure knowing your account is safely saved to your friend’s console and ready for you the next time you come over to play.
A forgotten passkey defaults to your Microsoft account password. If you forget your passkey, the console will default to your Microsoft account password as a fail-safe.
How to create your passkey
Press the Xbox button to open the guide.
Select System > Settings > Account.
Select Sign-in, security & passkey.
Select Create my passkey.
Enter a 6-digit passkey, and then re-enter the passkey to confirm.