Well you don't quite say what you do today in terms of what program you do to avoid showing an ID so I'll lay out both programs.

Clear

Clear is a private company that offers a pay-for service that offers biometric identification at many airports in the US. You can use Clear with or without PreCheck. Once you've signed up, paid and enrolled, the process is the following:

- Show up to a Clear terminal where a Clear agent signs in
- Scan your eyes or fingerprints and the kiosk identifies you
- Once idenfited, you scan your boarding pass (UA/DL sometimes comes up automatically)
- The clear agent escorts you to the TSA ID check and there they will either let you through, require you also use the TSA eye scanner or show your ID
- You are then allowed to go to the X-ray/scanner

TSA Pre-Check Touchless ID

This is a relatively new program that is only available at certain airports with certain airlines. DCA is American's first and currently only airport with this so if you've used this before it was with someone else.

Participation is free; however, you must be enrolled in a Trusted Traveler program and store your TT ID number and your passport details in your airline FF profile and opt in on the airline website. Once these are met, if you are departing from one of the airports participating (currently only DCA with AA) you get some sort of indicator on your boarding pass.

United and Delta (as Delta Digital ID) were early adopters of this and have it at several airports already. They also have special checked luggage lanes where the same technology is used to identify you.

At security, you go through a separate lane where the experience is roughly the same as using the new Global Entry kiosks. You get a quick picture which links your biometrics that they already had via your passport/TT account to the airline FF account to your boarding pass and are sent on your way without having to show your ID or your boarding pass (except perhaps at the entry to the line to verify eligibility). I've used it many times with DL and UA and it's very easy and quick.