public static String getLogImageCaptionDefaultPraefixFor(final String prefValue) {
        if (StringUtils.isBlank(prefValue)) {
            return LocalizationUtils.getString(R.string.log_image_titleprefix);
        }
        return prefValue.trim();
    }
return a list of preference keys containing sensitive data
main/src/main/java/cgeo/geocaching/settings/Settings.java