Samsung Wallet's capabilities have gradually been enhanced to allow the app to become a one-stop digital solution for everything from your payment cards, car keys, boarding passes to even digital ID. The company announced earlier this week that users in the United States can now finally add their US passports to Samsung Wallet.The pitch is genuinely appealing. You're at the airport, running late, and instead of fishing through your bag or pocket for a passport you're not entirely sure you packed, you tap your Galaxy phone at the TSA checkpoint and walk through.The digital passport feature has been launched in collaboration with CLEAR. It promises support at more than 250 TSA checkpoints across the United States. Given that CLEAR enables travelers to swiftly make their way through security lines at airports, you'd be forgiven for thinking that it's a government program.It's not. CLEAR is a private entity that basically generates revenue by charging consumers for faster access to public security infrastructure that already exists. Despite all of the assurances made regarding data protection, quite a few users would understandably not be too thrilled about the privacy prospects here.Samsung does say that all passport information is encrypted on the device itself. That's good, but it doesn't provide any context on what CLEAR does with the verification data on its end. This distinction is also not made sufficiently clear to the average user setting this up for the first time.Even if you were to be completely satisfied with data protection, there still remains an infrastructure problem. Being able to whiz through 250 TSA checkpoints sounds great, but it doesn't quite address the question of how many screening lanes actually exist across the United States where this digital ID may be used?It also does nothing about the human element, particularly whether the TSA agent you encounter even knows this feature exists or simply insists on being shown the physical passport? A physical passport has just one single point of failure, which is that you forget it to bring it with you to the airport.A passport stored in Samsung Wallet has a meaningfully longer list of things that can go wrong. Your phone battery dies. The app crashes. A software update introduces a compatibility issue with the TSA reader. You are locked out of your Samsung account. Your phone is stolen on the way to the airport, so on and so forth.There's also the fact that the digital passport is only good for domestic travel within the United States. You still need to carry a physical passport with you when you travel internationally, because the same feature will not be supported in other countries. The feature is effectively meaningless for you if you rarely travel domestically but do travel internationally often.What Samsung is actually building here, underneath the convenience narrative, is a case for Galaxy phones as identity infrastructure. Samsung Wallet already holds payment cards, boarding passes, hotel keys, loyalty cards, and home access credentials. A digital passport is the logical next step toward the phone becoming the single authenticated token for your entire life.That ambition is not inherently wrong. But it is an ambition that deserves far more scrutiny than it receives when it is packaged as an airport convenience feature. It's not like the physical passport is going anywhere. Samsung is itself telling you that much to absolutely bring it along when you need to travel overseas.It is also, inadvertently, the most useful thing Samsung could have said about where digital identity infrastructure actually stands right now. It's technically possible, commercially motivated, and not quite ready to be the only thing standing between you and your flight.