To confirm you are a human and not a bot, you can use the “I’m not a robot” test found on many websites. This test requires you to complete a simple task such as holding down a button or entering a code sent to your phone.
Alternatively, some websites use behavioral patterns to verify users are human. These may include looking at images, clicking buttons in a specific sequence, or even watching a short video.
The reference ID provided is just a unique identifier and does not confirm your identity. It’s used to help track and analyze the interactions with the website.
The main goal of these verification tests is to prevent automated software from accessing websites and performing actions without user permission. By confirming you are human, users can rest assured their online activities are legitimate.
Source: https://www.sfgate.com/food/article/sf-trader-joes-viral-dubai-chocolate-sold-out-20351598.php