Click on the following links. Please note these will open in a new window.

Probable Cause for Arrest?
http://criminal.lawyers.com/blogs/archives/507-How-does-the-law-define-probable-cause-to-arrest.html

Exigent Circumstances LectLaw.com
http://www.lectlaw.com/def/e063.htm

Consent Exigent Circumstances and Warrantless Home Entry
http://www.patc.com/weeklyarticles/consent,exigent-circumstances,warrantless-home-entry.shtml

No Warrant, No Problem: How the Government Can Get Your Digital Data
https://www.propublica.org/special/no-warrant-no-problem-how-the-government-can-still-get-your-digital-data