Mapping global passport power


Passport power can shape your life. A strong passport allows the holder to move smoothly through the world, breezing through borders with ease and opening doors for new opportunities in travel, work and investment.

But a weak passport spells endless rounds of visa applications, being denied, being treated with suspicion (in case you’re an economic migrant masquerading as a tourist), having to stump up large sums of money just so they can be sure you’ll go home again.

Around 200 passports exist today. All offer varying levels of travel flexibility. Some, like the German passport, can take their holders to 177 countries visa-free or visa on arrival. Others, like the Afghan passport, are practically useless, allowing entry across a mere 25 national borders.

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The aim of this project is to map global passport power using CartoDB. The original data came from a study called the Visa Restrictions Index, created by Henley & Partners. It was embedded in a PDF, making it impossible to access by scraping or copy-pasting. This was a chance for me to try out Tabula, an invaluable tool that extracts raw data in table form from within PDFs. Tabula worked really well in this case. It pulled the data neatly into Excel format, with the minimum of additional tweaking needed. Now I had a nicely formatted Excel sheet ready to work with.

The dataset contains three columns: Rank, Country Name, and Score (i.e. how many countries the passport holder can enter visa-free). I can imagine the final visualisation involving a world map, with the ranks perhaps mapped as pins (or circles) of increasing sizes (smallest for weakest passports, biggest for strongest). Circles would be geographically located, with the individual score showing up inside each circle.

Here’s how it ended up. I like how the chloropleth feature looks; it seems to work well for this particular map. From looking at this map I can see some starting points for potential stories involving national image, economic power, public diplomacy and more.