This amendment was created by the Founding Fathers as a response to the British practice of random searches of homes, businesses, and persons, again as an attempt to terrorize the colonists into silence and inaction as the Currency Act looted the profit of their labors for the Bank of England. The intention of the Fourth Amendment was to prevent the government from entering your home, place of business, or searching your person simply because they wanted to, or as part of a general campaign of intimidation. Evidence of actual wrong-doing, and not just disagreement with the government, had to be presented by the police to the courts, for a warrant for such invasion to be granted. Although neither the telegraph or telephone existed at the time the Fourth Amendment was ratified, under the 9th Amendment, 4th Amendment protections extend to new technologies. In the present day that includes computers and cell phones, although the government, attempting to justify the NSA spying on all Americans takes the position they do not.[quote/]
citation:
http://whatreallyhappened.com/WRHARTICLES/commbillrights.php