Identity

If user identity information is available in the form of a hashed email, you can pass the hash along with the source of the hash for reporting to Big Crunch.

It is recommended that the following code be placed before the general Big Crunch script to ensure that when a hashed email is available, it is set before ad unit auctions begin.

Step 1: Initialize BCLighthouseTag

First, if not already defined, define the following variables:

window.BCLighthouseTag = window.BCLighthouseTag || {};
window.BCLighthouseTag.cmd = window.BCLighthouseTag.cmd || [];

Step 2: Prepare Hash Data

After defining the BCLighthouseTag variables, if a hashed email is available (for example, from a newsletter or if the user is a member and logged-in), set a value for the source of the hashed email and provide the hashed email.

source = ENUM("newsletter", "guest", "member", "logged_in");
hashedEmailObject = {
  SHA256: "hash",
  SHA1: "hash",
  MD5: "hash",
};

Available Source Values

newsletter - Email collected from newsletter subscription
guest - Guest user email
member - Registered member email
logged_in - Email from logged-in user

Supported Hash Types

SHA256 - 256-bit SHA-2 hash (recommended)
SHA1 - SHA-1 hash
MD5 - MD5 hash

Step 3: Set Hashed Email

The variables are then provided in the setHashedEmail function:

window.BCLighthouseTag.cmd.push(function () {
  BCLighthouseTag.setHashedEmail(source, hashedEmailObject);
});

Examples

Example with a SHA256 email hash from an email newsletter:

window.BCLighthouseTag.cmd.push(function () {
  BCLighthouseTag.setHashedEmail("newsletter", {
    SHA256: "c8923d25d12a2781f0efec7ca4f0319aa36ffa257d4f726c5c7fc7476e7975a7",
  });
});

Logged-in User with MD5 Hash

Example with a MD5 email hash from a logged-in user:

window.BCLighthouseTag.cmd.push(function () {
  BCLighthouseTag.setHashedEmail("logged_in", {
    MD5: "77f62e3d370151237a2b0dc593ca8e02",
  });
});

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