2 In brief, the circumstances of the offending were as follows. The applicant was detained on 4 March 2012 by Australian Customs and Border Protection Service ('Customs') officers after arriving at Melbourne airport from Los Angeles, United States of America. The applicant was wearing a plastic leg brace (a moon boot) and when questioned was unable to provide any details as to the nature of his injury or his treating doctor. The applicant was conveyed to hospital by Customs and Australian Federal Police ('AFP') officers, where the brace was removed. Two packages were discovered within the brace. This procedure was recorded on video by AFP officers. The applicant, and the packages and other property seized, were taken to the AFP office in Melbourne. There, the AFP officers performed a presumptive Narcotic Identification Kit ('NIK') test upon the powder in the packages, which revealed the presence of cocaine. This procedure was recorded on video by an AFP officer, but the video recording was accidentally erased. The fact that the procedure had been recorded only emerged during the course of the trial. The packages were held overnight in a night safe at the AFP office. The next day, the packages were further examined by AFP forensics, who concluded that they contained 777.4 grams of pure cocaine. A marketable quantity of pure cocaine is 250 grams.[2] At trial, the prosecution also relied on evidence obtained from the applicant's computer, in particular Google searches of search terms apparently related to the transportation of drugs in casts and the evasion of security at airports and a Skype conversation with another person apparently discussing the penalties for drug trafficking.