Introductory Reflection
The rule of law and due process are considered fundamental pillars of American society, being applied to all forms, including civil, appellate, and procedural law. Traditionally, when one envisions these topics in relation to another, they observe them through the lens of criminal justice or the action of seeking justice and rectifying a violation of the law. Numerous amendments in the Bill of Rights deal directly with the criminal justice process and protecting the rights of citizens who may be potentially tried for a crime. One such prescription of rights is found in the Fourth Amendment, which protects “[t]he right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures.” A warrant is the mechanism through which searches are determined to be legal and rightful. The Fourth Amendment describes warrants stating, “no warrants shall issue but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.” If a warrant is required to collect evidence, then what is an officer expected to do when evidence is in their clear sightline, or right in front of them? One of the exceptions to this warrant rule is what is called the “plain view doctrine”. Throughout this text, this doctrine, its definition, implementation, and connection to modern debate will be explored. This doctrine is crucial to ensuring an effective and efficient criminal justice system however, there must be reasonable limitations placed upon it to ensure due process and a healthy judicial system.
Doctrine Defined
In short, the plain view doctrine is a legal innovation that allows officers to obtain and utilize evidence that is found within their normal sightline. The rule allows that when an item is in the plain or clear view of a police officer who is lawfully present the officer may seize it as evidence without obtaining a warrant first. This distinction is drawn to the fact that an officer must have a right to be in a location in order for them to collect evidence in front of them, which was decided in Washington v. Chrisman where the Court found that an officer had a right to use evidence as they had a right to enter a certain area of a home. Essentially, if an officer does not have a right to be present in a certain space (e.g., they illegally entered a home and found evidence), then the plain view doctrine can not be utilized to provide them a legal basis or reason to seize any evidence. Generally, many feel this rule is unnecessary or implied, as if an officer sees contraband in front of them, who is to stop them from taking or impounding it? The plain view doctrine builds judicial integrity and creates a rule by which courts across the nation apply to ensure that due process and the Fourth Amendment are properly applied.
Additionally, the doctrine determines essential steps needed to take during warrant procedures for law enforcement. The procedure of procuring a warrant, and for officers to prove with evidence that they need a warrant, are crucial steps to ensuring the Fourth Amendment is upheld and that no illegal searches and seizures are completed. The doctrine applies itself to not only securing evidence, but circumstances and objects in front of them can also be utilized to provide for further investigation. In Steele v. United States, the Court set a precedent that if police found evidence through means of plain view sighting, that evidence may be utilized in an application for a warrant as it is admissible for law enforcement purposes. This section of the doctrine expands the ability of an officer to act on something in front of them. With proper plain view observation, an officer can include what they see in an application for a warrant, meaning that if criminal activity is afoot, police have greater discretion to investigate and pursue justice.
Standard of Proof Applicability
The justice system includes numerous legal standards for police to meet in order for action to take place, which include reasonable suspicion and probable cause. Reasonable suspicion, the lower legal standard, “requires specific, articulable facts that would lead a reasonable officer to believe that criminal activity is occurring.” Probable cause, the higher bar to meet, “exists when the facts and circumstances within an officer’s knowledge would lead a reasonable person to believe that a crime has been committed (for an arrest) or that evidence of a crime is present in a specific location (for a search).” As previously explained when discussing Steele v. US, warrants,which are approved based on probable cause, are open to include relevant evidence from police gained by plain view sighting to go towards building probable cause. Probable cause is what can be expanded through the doctrine, but it is also probable cause that determines whether the doctrine can be applicable in the community. The Court in Arizona v. Hicks instituted a limitation of the plain view doctrine to limit wrongful police activity, explaining that an officer must maintain probable cause that the item in question of seizure is in fact contraband and not a random item. Police are not permitted to freely move around and search anything and everything they see; they must have a reason to search, and it must be a reason that aligns with disrupting criminal activity through collecting contraband. This is how probable cause directly impacts the doctrine through the concept of limitation.
Expectations of privacy are key to the judicial system. The Court further clarified in Illinois v. Andreas that once an item has been lawfully identified in plain view, police were allowed to track that item as privacy expectations were not in place or not able to be held by the owner of the item. For instance if an individual has placed contraband in a closed drawer, the police cannot apply the doctrine since there is a reasonable expectation of privacy. Opening the drawer would violate the plain view doctrine, as the police do not have the right to open the drawer. However, if the police correctly apply the doctrine by identifying contraband, and leave it be, an individual is not able to take it and place it somewhere new and renew their expectation of privacy over it. Now, the police have the authority to track the object and retrieve it, as they know it is contraband, and the process of identification is legal. This procedure can be applied to countless situations, and similar circumstances limit the act to ensure it is, most importantly, a fair rule that law enforcement can utilize to complete their work in an ethical way, directed by due process. Much like the Miranda Rights that prescribe steps police must take to ensure those in custody are informed of their rights, officers are trained to learn and understand the plain view doctrine to improve due process protocols in police departments.
The History of the Plain View Doctrine and the Exclusionary Rule
The legal genesis of the plain view doctrine’s institution into the legal process was in the 1968 Supreme Court case Harris v. United States. In this case, an officer was lawfully inspecting a vehicle impounded in connection to a robbery, (all of this was completed according to regulation) when he opened the door to close a window,for the safety of the contents of the vehicle, and in doing so, saw identification information that later was used as evidence. The question then became were the actions of law enforcement legal? And if so, what made them legal? The Supreme Court upheld and affirmed the decision of the lower DC District Court, accepting the viewpoint through a per curiam (by the court) opinion that, “once the door had lawfully been opened, the registration card, with the name of the robbery victim on it, was plainly visible. It has long been settled that objects falling in the plain view of an officer who has a right to be in the position to have that view are subject to seizure and may be introduced in evidence.” Simply put, the Court established how in this case, the actions of the police were in fact legal, upholding the plain view doctrine.
Now, the question remains regarding what mechanism exists to enforce the plain view doctrine, and more specifically, how evidence is dealt with when it is obtained through incorrect means? When the entry of evidence is debated, and certain evidence is found to have been collected through a violation of evidentiary rules, courts are allowed to implement what is referred to as the exclusionary rule. The exclusionary rule allows for the removal of evidence in a trial or case as it “prevents the government from using most evidence gathered in violation of the United States Constitution.” The Court instituted the rule in the 1914 case Weeks v. US. In this case, the Court was faced with evidence that had been obtained illegally and used for trial. Justice William R. Day in the majority opinion wrote that, “the letters in question were taken… in direct violation of the constitutional rights of the defendant… In holding them and permitting their use upon the trial, we think prejudicial error was committed.” Though the circumstance is not directly related to plain view, the case instituted the rule that Courts would utilize to exclude evidence from trial and ensure a sound and self-correcting judicial system would prevail for the future.
The Plain View Doctrine in Modernity (Internet Age)
In modernity, computers and the internet have taken over society as mostly everyone utilizes some part of these innovations in their everyday lives. As the world changes, the law must account for those changes, and so the issue arises: how does the plain view doctrine apply to the internet space? Scholar Kate Ward defines two specific viewpoints on how computer data can be viewed legally. First, there is the manner of data perceived as a container or related to how documents are treated in the court, viewing that, “[t]he physical computer is a container, and all electronic data stored therein are fairly searchable if agents have a valid warrant to search the device; furthermore, when those contents are exposed they are in plain view and subject to seizure.” This is a very broad scope and application of the doctrine. An alternative perspective interprets each and every piece of data as an individualized item with its own protections, not as a group unit. Those in support of individualized protections argue that officers are able to access a larger amount of information via this newfound internet access than ever before traditionally. Some in the field advocate for the complete removal of the plain view doctrine application to any cases that relate to data. Scholar Rayming Chang makes clear her viewpoint that digital searches necessitate searches of entire systems, and should therefore never allow the plain view doctrine to open the door for an invasion of privacy, adding and advocating that, “[t]he courts, police, and society will all benefit from eliminating the application of the plain view doctrine to digital evidence… Most significantly, the spirit of the Fourth Amendment and its censure of general searches will be respected.” The court's precedent speaks volumes about the issue, and can create an understanding of how justices have applied and further clarified how the doctrine interacts with certain subsets of the policing process.
Though several cases have dealt with this issue in numerous forms, a significant ruling that shines light on current precedent for digital data and the plain view doctrine comes from the U.S. Court of Appeals for the Ninth Circuit is U.S. v. Comprehensive Drug Testing Inc. In this case, an investigation had been completed reviewing drug use in relation to athletes through a database, and so it was determined whether the evidence from the investigation was admissible, and whether the plain view doctrine ought to be applied in admissibility argumentation. Chief Justice Kozinski explained that, “[t]he plain view doctrine requires evidence of illegality to be “immediately apparent” Horton v. California, 496 U.S. 128, 139-140 (1990). In this case, the spreadsheet in the “Tracey” directory listed drug-testing results for the ten players covered by the warrant as well as many others for whom the government lacked probable cause. Those additional results were not visible on the initial screen; the agent had to scroll right to view them. Once he did so, the agent saw the testing data for both the targeted ten and the other players.
The opinion continues by noting how the officer could have only displayed and been informed on the relevant pieces of data, but essentially, by exposing the other items, the action exceeded the purpose and scope of the search. Essentially, the opinion notes that when reviewing data files, authorities uncovered information that was in excess of what the original purpose of review was. The Court describes the application of the rule through only discussing information relevant to the search and not everything in limiting the ability of the rule to view all items in the database. This balanced approach is agreeable because it keeps both viewpoints in mind and takes into account the need for police to do their investigatory work while also keeping the rights enshrined in the fourth amendment at the forefront. Remaining rights-directed while also allowing reasonable efforts by police to investigate possible crimes is a healthy standard for courts to operate by for the future. Cases such as this one showcase how important the doctrine is to ensuring our rights are protected while police can still take reasonable action to complete their duties to protect and defend.
Concluding Reflection
The plain view doctrine has served as a tool for law enforcement officials to discover criminal activity by combining logical authority of purview to legal procedure. Officers are able to utilize evidence in front of them and apply it to prosecutorial business when there is enough probable cause to act on seizing or searching certain areas. However, if evidence is gained illegally, the exclusionary rule instituted removes such evidence from trial and ensures due process for the accused. When it comes to the internet and data age that is present for modern society, the plain view doctrine is challenged by some as opening up an entire data set to unrightful and over excessive searching by authorities. Recently, a court has taken a stand in addressing how the plain view doctrine can be applied in a reasonable way, not to the entirety of a database. The plain view doctrine is crucial to ensuring an effective and efficient criminal justice system, but there must be reasonable limitations placed upon it to ensure due process and a healthy judicial system. The viewpoint of the Ninth Circuit to not excessively impede investigative authority while valuing the limitations on the plain view doctrine itself is the right path forward, and as courts review similar cases, this case should be applied as a brightline standard.
Sources
Arizona v. Hicks. (n.d.). Oyez. Retrieved November 30, 2025, from https://www.oyez.org/cases/1986/85-1027
Chang, R. (2007). Why the Plain View Doctrine Should not Apply to Digital Evidence Why the Plain View Doctrine Should not Apply to Digital Evidence. Suffolk Journal of Trial and Appellate Advocacy, 12(1). https://dc.suffolk.edu/cgi/viewcontent.cgi?article=1187&context=jtaa-suffolk
Cornell Law School. (n.d.-a). Exclusionary rule. LII / Legal Information Institute. Retrieved November 30, 2025, from https://www.law.cornell.edu/wex/exclusionary_rule
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Cornell Law School. (n.d.-c). Reasonable Suspicion. LII / Legal Information Institute. Retrieved November 30, 2025, from https://www.law.cornell.edu/wex/reasonable_suspicion
Harris v. United States, 390 U.S. 234 (1968). (n.d.). Justia. Retrieved November 30, 2025, from https://supreme.justia.com/cases/federal/us/390/234/
Illinois v. Andreas, 463 U.S. 765 (1983). (n.d.). Justia. Retrieved November 30, 2025, from https://supreme.justia.com/cases/federal/us/463/765/
Justia. (2025). Plain View. Justia Law. https://law.justia.com/constitution/us/amendment-04/21-plain-view.html
Steele v. United States No. 1, 267 U.S. 498 (1925). (n.d.). Justia. Retrieved November 30, 2025, from https://supreme.justia.com/cases/federal/us/267/498/
U.S. v. Comprehensive Drug Testing, (U.S. Court of Appeals for the Ninth Circuit September 13, 2010). https://cdn.ca9.uscourts.gov/datastore/opinions/2010/09/13/05-10067.pdf
Ward, K. (2011). The Plain (Or Not So Plain) View Doctrine: Applying the Plain View Doctrine To Digital Seizures. University of Cincinnati Law Review. https://scholarship.law.uc.edu/cgi/viewcontent.cgi?article=1025&context=uclr
Washington v. Chrisman. (n.d.). Oyez. Retrieved November 30, 2025, from https://www.oyez.org/cases/1981/81-1349
Weeks v. United States, 232 U.S. 383 (1914). (n.d.). Justia. Retrieved November 30, 2025, from https://supreme.justia.com/cases/federal/us/232/383/
