# 🇪🇺 in-eu > Privacy conscious EU detection browser library `in-eu` is a library for roughly detecting whether a website user is in the EU, without requiring a roundtrip to your server or a lookup against a GeoIP database. It uses the browser's timezone (via the brilliant [jstz](https://github.com/iansinnott/jstz) and [locale](https://developer.mozilla.org/en-US/docs/Web/API/NavigatorLanguage/language) (`navigator.languages`) to infer whether someone is in the EU. `in-eu` trades absolute accuracy for a cautious approach that's more lightweight and respectful of end-user privacy. ## Usage ```bash $ npm install @segment/in-eu ``` ```javascript import inEU from '@segment/in-eu' inEU() // => true | false ``` or try one of the more specific helpers: ```javascript import { isInEUTimezone } from '@segment/in-eu' /* Only checks the browser timezone. Useful for checking if someone is physically present in the EU */ isInEUTimezone() // => true | false ``` ```javascript import { isEULocale } from '@segment/in-eu' /* Only uses the browser's language/locale Useful for checking if someone speaks an european language accounting for locale. e.g. pt-PT (portuguese from Portugal) */ isEULocale() // => true | false ``` ## License in-eu is released under the MIT license.