Maryland
How Carpenter v. United States applies in Maryland: state-specific rules, key cases, and bar exam notes for Fourth Amendment.
Maryland generally follows the principles established in Carpenter v. United States, recognizing the expectation of privacy in historical cell site location data. The Maryland Court of Appeals has emphasized protecting citizens from governmental overreach in digital privacy.
In Maryland, law enforcement must obtain a warrant based on probable cause before accessing a person's historical cell phone location data, reflecting the constitutional protections afforded under the Fourth Amendment.
The court ruled that obtaining cell phone records without a warrant violated the Fourth Amendment, affirming the need for a warrant in similar scenarios.
This case reinforced that the state must show probable cause and obtain a warrant prior to accessing data that can reveal a person's location history.
The Maryland court held that GPS tracking without a warrant infringes on a reasonable expectation of privacy, aligning with Carpenter's principles.
While both Maryland and federal law align on the need for a warrant to access cell site location data, Maryland courts have taken a more assertive stance on protecting privacy rights under state law. This reflects a broader interpretation of digital privacy protections compared to federal precedents.
Knowledge of Carpenter and its application in Maryland is crucial for the Maryland bar exam, especially regarding Fourth Amendment issues related to digital privacy and warrants.