The Passport and the Credentials
What the Nation issues, and what each document carries, seen in one place.
The passport’s data page, its page under ultraviolet light, the three cards, and the five ways a border checks them · From Book XII of the National Books, Passports and Credentials
The data page, as the Nation lays it out
The Sky Woman story in five spreads, in fluorescent ink on the visa pages: proposed, for the keeper of the story to approve before any is printed.
What it carries
1–9. The nine fields, in ICAO’s order: surname, given names, nationality, date of birth, sex, place of birth, date of issue, authority, date of expiry. Labels in English; a page of labels in Kanien’kéha and other languages follows.
P · GRT. Type P, a passport; GRT, the Nation’s own code, which no state uses.
Passport No. The Record Code, PSP001-YYMMDD-NNNNNN: the passport’s one number, and the Register’s.
The window. A transparent window with the holder’s second image, in the page itself: it cannot be pasted over.
The chip. A contactless chip to ICAO 9303, holding the data page signed by the Nation, where one is fitted.
The two lines. The machine-readable zone: 44 characters a line, with check digits, read by any zone reader.
Names are entered as parts: first name, middle names, and the LAST NAME in capitals.
The three cards: ISO/IEC 7810 ID-1, 85.6 × 54 mm · tap a card to turn it over
The National Card is the one most people carry: identity, with the credentials in force as endorsements, each checking online. The driver card and the pocket cards remain for holders who want them.
The two lines, worked: the check digit
The passport’s number is eighteen characters, so ICAO’s rule puts its first nine in the number field, the rest in the optional field, and one check digit over all eighteen. Each character becomes a value (A is 10, Z is 35), each value is multiplied by 7, 3, 1 in turn, and the last digit of the sum is the check digit.
The sum is 324; its last digit, 4, is the check digit that ends the second line. Change any character and the sum changes, so the reader rejects it.
A share link, worked: proving one fact
A share link works once, and expires; it proves what it says and nothing more.
What the officer sees
PSP001-261012-000001GRAND RIVER · F · 20 MAY 1996 · expires 11 OCT 2036
- Zone read: 44 + 44, check digits add up
- Chip: data groups signed by the Nation
- Register: in force today
Reliance: high · all three checks made
Five ways a border checks it, from the quickest to the surest
- 1By eyethe printed features: looks genuine
- 2A UV lampinks, thread, fibres: glows as it should
- 3A zone readerthe two lines: read, and add up
- 4A chip readerthe signed data: signed by the Nation
- 5The Registerits standing, now: in force today
The first three are the world’s; the last two are the Nation’s own: a chip the Nation signs, and a Register that says whether the passport is in force today. Standards: ICAO Doc 9303 (TD3 and TD1); ISO/IEC 7810 ID-1; ISO/IEC 14443; AAMVA; ISO/IEC 18013. The Edge Mark and the Digital Seal are the Nation’s own.
The printed poster
Download the poster as printed, A3, full quality: the-passport-and-credentials.pdf