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Language Fingerprint

Description: This function fingerprints the languagues that the client's browser is set to by utilizing the navigator.language, navigator.browserLanguage, navigator.systemLanguage and navigator.userLanguage objects.

Issues: None.

Returns: the browser, system and user langaguge

Entropy: ~10.0 bits

Output for your computer is:

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function fingerprint_language() {
    "use strict";
    var strSep, strPair, strOnError, strLang, strTypeLng, strTypeBrLng, strTypeSysLng, strTypeUsrLng, strOut;

    strSep = "|";
    strPair = "=";
    strOnError = "Error";
    strLang = null;
    strTypeLng = null;
    strTypeBrLng = null;
    strTypeSysLng = null;
    strTypeUsrLng = null;
    strOut = null;

    try {
        strTypeLng = typeof (navigator.language);
        strTypeBrLng = typeof (navigator.browserLanguage);
        strTypeSysLng = typeof (navigator.systemLanguage);
        strTypeUsrLng = typeof (navigator.userLanguage);

        if (strTypeLng !== "undefined") {
            strLang = "lang" + strPair + navigator.language + strSep;
        } else if (strTypeBrLng !== "undefined") {
            strLang = "lang" + strPair + navigator.browserLanguage + strSep;
        } else {
            strLang = "lang" + strPair + strSep;
        }
        if (strTypeSysLng !== "undefined") {
            strLang += "syslang" + strPair + navigator.systemLanguage + strSep;
        } else {
            strLang += "syslang" + strPair + strSep;
        }
        if (strTypeUsrLng !== "undefined") {
            strLang += "userlang" + strPair + navigator.userLanguage;
        } else {
            strLang += "userlang" + strPair;
        }
        strOut = strLang;
        return strOut;
    } catch (err) {
        return strOnError;
    }
}