Each passport index draws from a different authoritative source. Together they provide daily-updated passport intelligence across all three lenses.
Visa requirements
Government and public visa-requirements data, updated daily. This feeds both the raw Mobility count and the separate Friction access score — how smooth entry is, weighted from visa-free down to e-visa. When a country changes its visa policy, our rankings reflect it within 24 hours.
World Bank GDP
World Bank economic indicators (constant USD) per country. This feeds GDP reach — the share of world GDP accessible to each passport. We use constant-dollar GDP to avoid exchange rate distortions.
UNESCO World Heritage
The UNESCO World Heritage Centre's official site list. This feeds Heritage — the share of the world's cultural sites accessible to each passport. Updated as UNESCO adds or modifies sites.
Update cadence
Daily. The visa requirements pipeline runs every day. GDP and heritage data update less frequently at the source (annually and as-needed), but we check for changes daily.
Visit any country page to see all three passport indices with their source citations.