Warrantless Search of Abandoned Property
A person gives up their section 8 rights including an expectation to privacy when their property becomes abandoned.
The main issue is whether the claimant "acted in relation to the subject matter of his privacy claim in such a manner as to lead a reasonable and independent observer to conclude that his continued assertion of a privacy interest is unreasonable in the totality of the circumstances." This is found as a matter of fact.
The act of abandonment must be done by the owner of the object. Where abandonment was by act of a third party, then the privacy interest of the owner will still exist.
The conduct of police in obtaining and processing the evidence is not a relevant consideration.
A main point of litigation is over whether the officer had grounds to believe that the property was abandoned. This is particularly true where the information is based on hearsay or assumptions.
Deleted Files on a Computer
Files that have been deleted from a computer is not the equivalent of abandonment. Rather, it is a sign of an intent to keep data private from everyone including the accused.
- R v Patrick, 2003 SCC 17 (CanLII) at para 22-23, 25
R v Plummer, 2011 ONCA 350 (CanLII),  O.J. No. 2034 (C.A.)
R v Nesbeth 2008 ONCA 579 (CanLII), (2008), 238 CCC (3d) 567 (Ont. C.A.)
R v B.(L.) 2007 ONCA 596 (CanLII), (2007), 227 CCC (3d) 70 (Ont. C.A.)
R v Patrick,  1 SCR 579, 2009 SCC 17 (CanLII), at para 25
R v Wafid Delaa, 2009 ABCA 179 (CanLII), (2009), 244 CCC (3d) 502 (Alta. C.A.) at para 6, dismissed leave  S.C.C.A. No. 302
- Patrick at 25
- e.g. R v Law,  1 SCR 227, 2002 SCC 10 (CanLII)
Wafid Delaa at para 6 - undercover officer got DNA sample of accused by tricking them into taking part in gum-tasting survey
c.f. R v Nguyen, 2002 CanLII 44910 (ON CA), (2002), 57 O.R. (3d) 589 (Ont. C.A.) - sample obtained in police station
- R v McNeice, 2013 BCCA 98 (CanLII)