“Because one’s right to retreat into his or her home without unreasonable government interference is a core principle of the fourth amendment (Kyllo v. United States, 533 U.S. 27, 31, 121 S. Ct. 2038, 150 L. Ed. 2d 94 (2001)), law enforcement officers generally may not enter, much less search, a person’s home without a warrant absent exigent circumstances.” – Justice Burke, Appellate Court of Illinois, Second District, The People v. Slavin, 964 N.E.2d 150 (2011)