At a growing list of airports, TSA PreCheck travelers no longer have to show physical IDs or boarding passes

That’s correct. Many airports now have upgraded technology that allows TSA PreCheck travelers to confirm their identity and flight information using biometric data, such as facial recognition, rather than needing to present a physical ID or boarding pass. This can create a more streamlined and contactless process for getting through security. However, it’s still advised to travel with your ID and physical boarding pass as backup, just in case there are technical issues or your airport doesn’t have this technology.