The queue at the arrivals hall snakes around the pillars. Two hundred tired passengers, one line. Then a family of four veers left into a lane marked "Mobile Passport Control", phones out, and they're through in under ten minutes. The rest of the hall is still waiting.
If you fly into the United States often — or plan to — that sign is worth knowing about. Mobile Passport Control (MPC) is a free, official app from US Customs and Border Protection that lets eligible travellers do their arrival paperwork on their phones before they even reach the inspection point. It can genuinely cut your wait. But there's a quieter question worth asking, the one this blog exists for: what does it do to your travel record? Less than you might think — and the part that matters is the part the app doesn't keep.
What Mobile Passport Control actually is
MPC is CBP's own mobile app, available on iOS and Android. You create a traveller profile by scanning your passport (the profile stays on your phone for future trips), and before each arrival you answer CBP's inspection questions — the same customs declaration questions you'd otherwise answer at the desk — take a selfie, and submit. The submission stays active for up to 4 hours before landing (8 hours for land-border arrivals), and up to 12 travellers can be grouped into one submission from a single phone.
When you land, you go to the marked MPC lane, show your passport, and the officer finalises the inspection. That's the whole trick: the questions are answered in advance, so the face-to-face part is short.
Who can actually use it
This is the part people get wrong. MPC is not for everyone, and being allowed to use it has nothing to do with how experienced a traveller you are. Per CBP's official page, four groups are eligible:
- US citizens
- US lawful permanent residents (green card holders)
- Canadian citizen visitors with a B1/B2 visa
- Returning Visa Waiver Program travellers with an approved ESTA
If you're a Pakistani passport holder flying to the US on a B1/B2 visa — like many of PassportTrail's readers — the app is currently not an option for you. That may change, but as of today the eligible list is fixed, and it is worth checking the official CBP page before each trip rather than trusting a blog (this one included).
Where it works — and the 2026 land-border surprise
MPC runs at 63 sites: 37 US international airports, 15 preclearance locations, 4 seaports, and — this is new — 4 land border crossings. In April 2026, CBP deployed MPC for eligible pedestrians at four crossings in Washington state (Blaine Peace Arch, Blaine Pacific Highway, Lynden–Aldergrove, and Sumas), with further land rollouts expected through the rest of 2026. CBP lists three departure locations too (St. Thomas and St. Croix).
The land-border addition is the one travellers keep missing, because for years "MPC doesn't work at land borders" was true. It isn't anymore — though for now it's limited to those four Washington pedestrian crossings.
Three things MPC does not change
1. It does not replace any travel document. MPC does not replace a visa, ESTA, or your passport. CBP says this plainly: the app doesn't replace any required travel documents. You still need everything you needed before.
2. It does not change your admission record. Using MPC doesn't alter what kind of entry you get. Your I-94 admission record is still generated the way it always is — electronically from airline data at air and sea ports — and your admission period, not your visa's expiry date, is still what decides how long you can stay. At the new land-border crossings, the app actually links to a provisional I-94 application you fill and pay for before arriving — the I-94 process is separate, and MPC only streamlines the inspection itself.
3. It does not give you a passport stamp. In line with the ongoing shift away from physical passport stamps — CBP ended routine stamping at primary inspection — an MPC inspection ends with no ink in your passport. You can ask an officer for one, but plan on the electronic record being the proof.
What this means for your travel records
Here's the part that matters for this blog's readers: the app does not keep a travel history for you. Your profile — name, passport details — stays on your phone for reuse. But each trip's submission (the answers, the photo) is temporary and cleared after processing. The official CBP page advertises no trip history, and for good reason: MPC is a processing shortcut, not a record book. CBP's own I-94 portal — not the MPC app — is where your entry record lives.
So if you use MPC, log the trip yourself the same way you would any other crossing: the date, the port, the flight, and the I-94 admission period you were given. Pull your I-94 record after each entry and check it matches — electronic systems are accurate most of the time, but "most of the time" is not a record-keeping strategy. (If you've ever wondered whether a crossing went unrecorded at all — land borders being the classic case — you already know why your own log is the only record you fully control.)
The practical habit, for eligible travellers: submit your MPC declaration while you're taxiing at your origin or waiting at the gate — not after you land. And screenshot or note the submission confirmation before you walk into the hall; you won't need it at the lane, but it becomes part of your trip file.
The bottom line
Mobile Passport Control is genuinely useful — a free, official shortcut through one of the world's most annoying queues, now expanding beyond airports into land borders. What it isn't is a record-keeper, a document, or a change to how long you're admitted. The speed is real; the paperwork obligation is unchanged.
That's exactly where PassportTrail fits: the app gets you through the hall faster, and PassportTrail keeps the record of the trip itself — the dates, the ports, the admission periods — in one place, so that when a visa officer, a form, or your own memory asks "when were you last in the US?", the answer is already written down.
PassportTrail provides personal record-keeping tools, not legal or immigration advice. Entry rules and app eligibility change — verify with official sources (cbp.gov) before you travel.
