Weapons.
The plain view doctrine was first articulated by the United States Supreme Court in the 1967 case of Coolidge v. New Hampshire. The doctrine allows law enforcement officers to seize evidence without a warrant if it is in plain view and the officer has a lawful right of access to the object.
Well, if the police department thinks that a cell phone may hold important evidence, then there is no need for a warrant. By the time the warrant is issued, the evidence may have been already destroyed or deleted.
Unlike the telephone, information posted on the internet is open to the public. Anyone can view it, it is not necessary to "tap" it, and the police can collect it and use it as evidence without a warrant, much as they could watch your behavior in public and use it as evidence.
Electronic or digital evidence is often inadmissible if it was obtained without any authorization whatsoever. Without a warrant even solid evidence can be rendered useless.
An officer of the law can only search for evidence if they have reasonable cause in doing so. All persons do however have the right to see a warrant before allowing a search, which is their right. All officers are aware of this, however, and if asked will produce a warrant. Without this warrant the evidence may be inadmissible in the court of law.Law Enforcement does not have to show you the warrantprior to serving it, or arresting you. Simply the knowledge that the warrant exists is sufficient for them to conduct their activity.They must, however, leave a copy of a search warrant at the residence, if it was a search warrant for a home, and an inventory of things taken, if any.
Use evidence in court if they obtained it without a warrant
No. If the search warrant is invalid and they illegally searched you or someone you know (like without reasonable cause, or without the warrant) then they can't use any evidence against you. To the best of my knowledge, anyways. I don't know how many ways a search warrant can be wrong though...if they were searching for like, pot, but found cocaine, they CAN use that though. Or a gun, or something like that. If they have the warrant, they can use it. If they searched without the warrant, its invalid and inadmissible 100%.
A search cannot be conducted without a warrant, which cannot be obtained without evidence of reasonable suspicion. This reasonable suspicion is often referred to as probable cause.
Yes. It is usually referred to as 'plain view.'
A general warrant, whereby and officer may be commanded to search suspected places without evidence of a fact committed, or to seize persons not names, or whose offense is not suppoted by evidence, are grievous and oppressive and ought not be granted.
To come into a home the police need a search warrant to search. Without the warrant the evidence is not admissible in court. It would be an illegal search.