China's first self-developed maritime wireless intelligent monitoring system was put into use in Bohai Bay on July 11. China Beihai Navigation Support Center and Dalian Maritime University developed the ‎Automatic Identification System (AIS) to intelligently identify and accurately locate ships with abnormal dynamics and static information, such as name, speed and call signs, as well as base stations that broadcast malicious information. | CGTN

#OnThisDay 1994: A new Caller Display service by British Telecom offered customers the chance to screen calls by seeing who was calling them and, by dialling 1471, the number of the last person who called. Clip taken from BBC News, originally broadcast on BBC One, Monday 21 November, 1994. #bbcarchive #callerdisplay #1471 #141 | BBC Archive