When a customer gives you consent, you need to track it as an event. This is important because if your legal base for processing the customer’s data is consent then you might be asked to provide proof of consent if one of your customers complains to their local data protection authority.

Tracking of consent does not happen automatically so you need to integrate tracking of the consent event on all the touchpoints where you collect customers’ consent. The name of the event has to be `consent`.

Historical imports can be uploaded as a consent event.

For a new subscription and ongoing events, it is recommended that you track first via [double_opt_in](🔗) events (to capture consent from the customer) together with an Bloomreach Engagement scenario.

Every valid `consent` event must include 4 required attributes as defined below. Other attributes are defined either manually as custom attributes or generated automatically. You can specify and track any other custom attributes you need.

If you track consent with a specified timestamp in the valid_until event parameter and consent gets **expired**, the consent will change to **revoked**, and consent event with status reject _will not_ be tracked.

Bloomreach Engagement provides three ways in which you can track consent:

# API tracking

You can track consent events in real-time from your website or from your internal systems using our API. More information about tracking can be found in the [JS SDK documentation](🔗). Tracking of a new event is also explained in the [Add event section](🔗) of the API reference.

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Security disclaimer

To avoid falsifying consents by potential attacks, you should disable Public API for consents and use only private API group when authenticating to Tracking API.

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Event tracking in JS SDK is asynchronous

If you need to track the `consent` event before page navigation (or when the user submits a form), make sure to wait until the event is successfully tracked by utilizing the `successCallback` parameter of the SDK's `track` method before redirecting to the new URL.

# Batch imports

Bloomreach Engagement supports batch loading of consents. You can either connect Bloomreach Engagement to your existing database or provide consents in a CSV file format. If you decide to load consents via batch imports, you have to define the required consent attributes from the table above. If you choose this option, make sure that you set up API tracking first and only then import consents. Imported consents should have a timestamp just before the API tracking started so you can distinguish them.

# CRM

You can manually grant or revoke consent for each customer in the customer view. Go to `Data & Assets` > `Customers` > click on the desired customer > click on `Consents`, and there you are able to see and change the customer's status for each category. This is important for adjusting consent when a customer changes their preferences.

# Customer identification

If you want to know more about how the individual customers are identified, what is the difference between their hard and soft IDs, and how do you merge multiple IDs into one, go to the [Customer Identification article](🔗).