The police took advantage of the fact that Chang is an avid online computer game player who used WiFi to go online. After finding out his online name, the police were able to use wireless base stations and interception software to pinpoint his location.
由於張錫銘酷愛利用無線上網玩網上遊戲，警方查出其網路化名後，藉由無線基地台的定位功能及攔截程式解碼查出其位置。