Methodology & sources
Every answer on this site is a claim about the law of a real country, and getting it wrong can ruin someone's trip. This page explains where the data comes from, how often it is checked, and what happens when we find a mistake.
Where the answers come from
The base of the service is a matrix of entry rules for 197 passports × 196 destinations. On top of it lives a hand-maintained layer of dated changes, each with a primary source — an immigration authority, a ministry of foreign affairs or an official government gazette. Every pair page links to the official source for its destination, so you never have to take our word for it.
How often it is checked
We re-check the data against official sources every week. Confirmed changes are recorded in the public change log with the date they took effect and a link to the primary source. Rules that are announced but not yet in force are listed separately — and our answers keep the old rule until the new one is officially in effect, because an early answer is a wrong answer.
What we do not do
We do not guess. A destination whose transit rules, entry conditions or stay limits we could not verify simply shows nothing for that field — silence instead of a plausible-sounding invention. We sell no visas and take no commission from visa agencies, so no answer here is shaped by what earns more.
Corrections
Found a pair that is wrong or outdated? Tell us and we will re-check it against the primary source within days: the fastest way is the official Telegram bot @VisaChecker_TeleBot. Confirmed corrections land in the change log like any other change.