With Dezeen's Brexit passport design competition underway, we're taking a look at existing travel documents that any citizen would be proud to slap down at customs.
From a flipbook-style animation to a secret music score that appears under blacklight, these five passports show designers experimenting with what can be a limiting format.
Should these designs ignite your own creative spark, head to Dezeen's Brexit passport competition entry page. We are calling for entries that present a positive vision of the post-Brexit UK to the world, and that represent all its citizens.

Norwegian passport
Oslo-based Neue Design Studio won the competition to redesign Norway's passports in 2014, although the finished product is yet to enter circulation. The passport is distinguished by its minimal double-page illustrations of landscapes from different parts of the country, which transform under UV light to include the Northern Lights in the sky. The covers for the three variations (standard, immigrant and diplomatic) feature highlighter hues with a small coat of arms in the lefthand corner.
Read more about the Norwegian passport by Neue Design Studio ?

Finnish passport
The Finnish passport is probably the only one to double as entertainment for travellers caught in long customs queues. It features an illustration of an elk that appears to walk when you flick the pages like a flipbook.
Designed in 2012 by a consortium working with the Finnish Police Board, it has unfortunately been repl...