These parameters can be added to any of the OneTag events listed above. They help Criteo identify users across sessions and devices, which improves ad targeting and measurement — especially on browsers with limited cookie support (e.g. Safari, Firefox).

Add these push calls to your events before the main event call (e.g. viewHome, viewItem, etc.):

// Email (hashed — SHA256 recommended)
{ event: "setEmail", email: "##SHA256_HASHED_EMAIL##", hash_method: "sha256" },

// Phone number (hashed — SHA256 recommended)
{ event: "setSha256HashedPhoneNumber", phone_number: "##SHA256_HASHED_PHONE##" },

// Customer ID (CRM / login ID — must be encrypted, not plain text)
{ event: "setData", data: { cx_eid: "##ENCRYPTED_CUSTOMER_ID##" } },

// Visitor ID (consistent ID for anonymous users, e.g. first-party cookie)
// Zip code (user's shipping/billing zip code)
{ event: "setData", data: { cx_zipcode: "##ZIP_CODE##" } }

Field	Description	Example	Syntax	Required
Partner Id	A numerical value that identifies your website account on the Criteo network.	12345678	Integer	Yes
Email Address	Contains either: SHA256 hashed email (in line with industry standards) MD5 hashed email Plain text (if allowed by the law in your country)	79054025255fb1a26e4bc422aef54eb4...	String (trimmed and lower-cased, encoded in UTF-8) Plain text emails Sha256 and md5 hashed emails	Yes
Hash Method	User's email, pass as SHA256 or MD5 hash. Use `hash_method: "sha256"` for SHA256, `"md5"` for MD5. For plain text (where permitted), omit hash_method.	sha256	String	Yes
User Phone Number - Plain Text	User Phone Number - Plain Text	+33140402290	String. Trimmed E.164 format. Number starts with "+" sign, includes the country code and there is no leading 0.	No
User Phone Number - SHA256	User Phone Number - SHA256	f80a807618cce09f81574aad74a3efe06c27c200d50873754fd287c9f15fea68	String. Trimmed E.164 format including the country code, without the leading "+" sign and SHA256-hashed.	Recommended
Customer ID	Non-PII identifier from your CRM (user login ID, for example). Must be hashed (MD5 or SHA256).	49f68a5c8493ec2c0bf489821c21fc3b	String	Recommended
Visitor ID	A stable ID for anonymous users, such as a first-party cookie value. Consistent across sessions.	53e20ea700424f7bbdd793b02abcb5d7	String	No
Zipcode	Zip code of the shipping address. Value is hashed before storing in our database. We do not store any PII and are compliant with all local regulations.	12345	String	Recommended

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