Get more out of pixel with automatic advanced matching
Using automatic advanced matching, you will be able to accurately attribute conversions and increase your audience size to drive better results from your Facebook ads.
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About automatic advanced matching
With automatic advanced matching, we can capture the hashed customer data (e.g. email addresses) that you collect from your website during processes such as checkout, account sign-in or registration. Hashing is the process that we use to transform data for security reasons. We can then use hashed identifiers to better match people visiting your website with people on Facebook, which can lead to more attributed conversions for your Facebook campaigns and a larger size of your Custom Audiences.The pixel advanced matching process is not designed to collect any sensitive information such as passwords or financial, health or government data.
Benefits of automatic advanced matching
Automatic advanced matching can improve the performance of your ads by increasing your Custom Audience size and it can help you to better measure the efficacy of your ad campaigns by capturing more attributed conversions:- Increase your Custom Audience size: Custom Audiences enable you to target people who have interacted with your website. With more customer-provided data, we're able to better match these website visitors to people on Facebook and increase the size of your Custom Audience
- Increase the number of attributed conversions: Additional customer data allows us to connect more of the conversions that happen on your website to people on Facebook. With this information, you'll have a more complete picture of the impact of your ads on website purchases and other conversions.
Setting up automatic advanced matching
You can quickly turn on automatic advanced matching in Events Manager, or you can manually set up advanced matching. We recommend using the automatic option because it doesn't require any coding changes:1. Go to Events Manager and select your pixel.
2. Go to the Settings tab.
3. Under the Details section, select Automatic advanced matching
4. Select the specific data that you want to send from your website. We suggest selecting email addresses and phone numbers for the best results. 
That's it! You will start to automatically send customer-provided data from your website.
If you're setting up pixel for the first time, you'll follow the instructions to create and implement your pixel and then click Use automatic advanced matching.
* Nguồn: Facebook