The messaging app LINE shows kidoku, read, once a message has been opened. The feature is said to have been designed after the Great East Japan Earthquake of 2011, so that a sender could know the other person had read the message and was safe.
Leaving a read message without a reply is called kidoku surū, read and pass. The Daijisen dictionary lists the word. Gendai Business writes that the name came to be used as a reproach.