A court in Hasselholm in southern Sweden also imposed a fine, The Local reported.

The man hid the phone behind the headboard of his girlfriend's bed, hooking up the charger to a bedside lamp. He set the phone up so, when he called it, the phone allowed him to hear what was being said in her room -- and he learned his ex- had indeed met someone else.

The court found the man's violation of his former girlfriend's privacy was so serious that a fine alone was not enough.