Canadian passport has a black light secret

There's a secret design hidden in plain sight on Canadian passports. The regular travel document is dark blue on the outside, and the 36 inside pages are mostly off-white with unremarkable artwork. But all that changes when the passport is put under ultra-violet, also known as black light. See also: Norway's new passport design is a work of art The passport is not that new — Canada began issuing the new design in July 2013 — and previous designs of the passport also included artwork only vis...