It's split second to read. It's all the other stuff they are potentially mandated to do. Checking no fly lists, police databases, taking scans of your photo for

It's split second to read. It's all the other stuff they are potentially mandated to do. Checking no fly lists, police databases, taking scans of your photo for storage. Having crazy expensive SDKs that run "tests" on you passport to check that it's according to your country's specific passport format and unique fraud checks. Some run UV scans, etc.