Before scanning your passport for online check-in, an e-visa, or a reservation, one question repeatedly arises: which page should be scanned, and under what conditions? The answer seems simple, but the requirements vary depending on the entity involved (airline, consulate, hotel). Understanding these differences helps avoid a rejected application or boarding issues.
MRZ Zone of the Passport: the Data Read by Automated Systems
The page to scan is almost always the passport identity page, which contains the photo and biographical information. At the bottom of this page is the MRZ (Machine Readable Zone), made up of two lines of characters readable by optical scanners and biometric gates.
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This MRZ zone contains the name, nationality, date of birth, passport number, and its expiration date. Online check-in systems of airlines, such as British Airways or Cathay Pacific, explicitly request that this page be scanned or photographed to automatically extract this data.
To know precisely which page of the passport to scan depending on each situation, three use cases must be distinguished, which do not all require the same level of detail.
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| Situation | Page to Scan | Required Elements | Clarity Requirement |
|---|---|---|---|
| Online Check-in (airline) | Identity page (photo + MRZ) | Number, name, expiration date | MRZ readable without glare |
| e-Visa or Consular Visa Application | Identity page + sometimes previous visa pages | Clear photo, all mentions visible | Very high (frequent rejection if blurry) |
| Hotel or Rental Reservation | Identity page only | Name, nationality, number | Medium |
| Personal Backup Copy | Identity page + entry stamp page | All fields readable | Sufficient for identification |
Passport Scan and GDPR: Minimizing Data Transmitted
Sending a complete scan of your passport via email or through an online form exposes you to a real risk of identity theft. The principle of data minimization as stipulated by the GDPR recommends transmitting only the fields strictly necessary for the procedure.
In practice, this means that a hotel requesting a “copy of the passport” does not need your full number or your signature. You can redact (mask) irrelevant elements before sending.
Precautions to take before sending a passport scan:
- Verify that the recipient has a legitimate reason to collect this data (legal obligation, transport contract, consular formality)
- Mask unnecessary information: partial passport number, signature, irrelevant mentions for the procedure
- Prefer sending via a secure portal rather than unencrypted email, as a passport scan attached to an email remains stored on email servers
- Add a watermark “copy” on the document to limit its fraudulent reuse
This approach is not an excess of caution. An unprotected passport scan can be used to open a bank account or take out a loan in certain countries, without further verification.
NFC Chip of the Biometric Passport: a Test to Do Before Departure
Biometric passports contain an NFC chip that stores a digital version of the photo and fingerprints. More and more airlines and border control systems read this chip to speed up boarding.
The problem arises when the chip is damaged or unreadable. A passport whose identity page appears intact may be rejected by an automatic gate if the NFC chip no longer responds. Testing the NFC reading of your passport before the trip avoids an unpleasant surprise at the airport.
Several mobile applications allow you to check the readability of the chip. You just need to place the passport against the back of the phone and start the reading. If the application fails after several attempts, the passport may cause issues at automatic kiosks, even if the optical scan of the MRZ works normally.
Residual Validity of the Passport: the Most Common Trap at Scan
Scanning the correct page is useless if the passport does not meet the validity conditions of the destination country. Most countries outside the European Union require a residual validity of several months after the return date. This duration varies depending on the destinations.
During online check-in, the system automatically extracts the expiration date from the MRZ. If the residual validity is insufficient, the airline may block the check-in or refuse boarding. The website of the Ministry of Foreign Affairs (diplomatie.gouv.fr) publishes the requirements country by country in its travel advice.
A detail often overlooked: some countries consider a passport invalid if pages are torn, stained, or if the cover is too damaged, even when the expiration date is still far off. A damaged passport may be refused at border control, regardless of the quality of the scan provided beforehand.
Scan Quality: Accepted Resolution and Format
A scan rejected by an online visa portal is rarely due to a bad page. The rejection most often comes from a resolution, framing, or glare issue.
- Photograph the identity page flat, on a dark and plain background, without flash glare or cast shadows
- Frame the entire page with a regular margin, without cutting off the MRZ or corners
- Save in PDF or JPEG format as requested, ensuring that the file does not exceed the maximum size allowed by the form
Flatbed scanners produce a sharper result than a smartphone camera, but most portals accept a photo taken with a recent phone if the lighting is correct. The text of the MRZ must remain perfectly readable once the file is zoomed in.
The identity page of the passport remains the reference document for any dematerialized travel procedure. Before each departure, checking the readability of the NFC chip, the residual validity, and the quality of the scan covers the three main causes of blockage at check-in or at the border.