Residents of Japan may be shocked to learn they are technically violating the country¡¯s Radio Law by connecting computers, smartphones and tablets that have been purchased outside of Japan to domestic WiFi sites.

Although legislation says such violations are punishable by up to a year in prison or a fine of up to ?1 million, the regulation has never been strictly enforced.

But the law is quite clear: All wireless devices sold in Japan must have a technical conformity certificate (gijyutsu kijyun tekig¨­ sh¨­mei, which is usually shortened to giteki in Japanese). Electronic devices that have such a certificate adhere to regulations under the Radio Law.