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docs/ref-info/ref-how-uid-is-created.md

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# How the UID2 Token Is Created
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:::note
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This article describes how the UID2 token that the publisher sends in the bidstream is created. The process is the same for advertisers creating UID2 tokens for conversion pixels. It does not apply to <Link href="../ref-info/glossary-uid#gl-tokenized-sharing">tokenized sharing</Link>, where raw UID2s are encrypted into UID2 tokens before sending to another sharing participant.
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When a publisher sends a user's <Link href="../ref-info/glossary-uid#gl-dii">DII</Link>&#8212;<Link href="../ref-info/glossary-uid#gl-hash">hashed</Link> or unhashed email addresses or phone numbers&#8212;to the UID2 Operator, and in return receives a <Link href="../ref-info/glossary-uid#gl-uid2-token">UID2 token</Link> to use for targeted advertising, there is a very specific sequence of processing steps that occurs along the way.
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Some preliminary steps are taken by the publisher, but most of the processing steps are done by the UID2 <Link href="../ref-info/glossary-uid#gl-operator">Operator</Link>.
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It's very important that the publisher steps are performed in the correct sequence:
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- When steps are performed in sequence, the resulting value can be recognized as related to other instances of tokens generated from online activity by the same individual: the underlying [raw UID2](../ref-info/glossary-uid.md#gl-raw-uid2) matches other tokens generated from the same raw UID2, and therefore the token is suitable for targeted advertising.
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- If steps are taken out of sequence, the resulting value cannot be related to other instances of tokens generated from online activity by the same individual, and therefore the token is not suitable for targeted advertising.
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- When steps are performed in sequence, the resulting value can be recognized as related to other [UID2 identifiers](../intro.md#uid2-identifier-types) generated from online activity by the same individual: the underlying [raw UID2](../ref-info/glossary-uid.md#gl-raw-uid2) matches the raw UID2s generated by other UID2 participants from the same DII, and therefore the token is suitable for targeted advertising.
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- If steps are taken out of sequence, the resulting value cannot be related to other UID2 identifiers generated from online activity by the same individual, and therefore the token is not suitable for targeted advertising.
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For a summary, see [Steps to Create a UID2 Token](#steps-to-create-a-uid2-token). For an example in diagram form, see [Creating a UID2 Token&#8212;Example](#creating-a-uid2-tokenexample).
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i18n/ja/docusaurus-plugin-content-docs/current/ref-info/ref-how-uid-is-created.md

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# How the UID2 Token Is Created
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:::note
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This article describes how the UID2 token that the publisher sends in the bidstream is created. The process is the same for advertisers creating UID2 tokens for conversion pixels. It does not apply to <Link href="../ref-info/glossary-uid#gl-tokenized-sharing">tokenized sharing</Link>, where raw UID2s are encrypted into UID2 tokens before sending to another sharing participant.
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:::
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When a publisher sends a user's <Link href="../ref-info/glossary-uid#gl-dii">DII</Link>&#8212;<Link href="../ref-info/glossary-uid#gl-hash">hashed</Link> or unhashed email addresses or phone numbers&#8212;to the UID2 Operator, and in return receives a <Link href="../ref-info/glossary-uid#gl-uid2-token">UID2 token</Link> to use for targeted advertising, there is a very specific sequence of processing steps that occurs along the way.
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Some preliminary steps are taken by the publisher, but most of the processing steps are done by the UID2 <Link href="../ref-info/glossary-uid#gl-operator">Operator</Link>.
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It's very important that the publisher steps are performed in the correct sequence:
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- When steps are performed in sequence, the resulting value can be recognized as related to other instances of tokens generated from online activity by the same individual: the underlying [raw UID2](../ref-info/glossary-uid.md#gl-raw-uid2) matches other tokens generated from the same raw UID2, and therefore the token is suitable for targeted advertising.
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- If steps are taken out of sequence, the resulting value cannot be related to other instances of tokens generated from online activity by the same individual, and therefore the token is not suitable for targeted advertising.
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- When steps are performed in sequence, the resulting value can be recognized as related to other [UID2 identifiers](../intro.md#uid2-identifier-types) generated from online activity by the same individual: the underlying [raw UID2](../ref-info/glossary-uid.md#gl-raw-uid2) matches the raw UID2s generated by other UID2 participants from the same DII, and therefore the token is suitable for targeted advertising.
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- If steps are taken out of sequence, the resulting value cannot be related to other UID2 identifiers generated from online activity by the same individual, and therefore the token is not suitable for targeted advertising.
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For a summary, see [Steps to Create a UID2 Token](#steps-to-create-a-uid2-token). For an example in diagram form, see [Creating a UID2 Token&#8212;Example](#creating-a-uid2-tokenexample).
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