| Attorney here. The search incident to lawful arrest doctrine is rooted in officer safety. Specifically, the Court says officers should have the ability to look for guns and contraband when someone is pulled over and it's likely they are armed or their immediate person or vicinity poses a threat and/or has evidence of a crime. The courts have decided that any drug suspicion means they are likely to have a weapon, which is unfortunate, but at least based in some reality. To my knowledge, the only court (and courts are split) that has allowed electronics to be searched is when a drug dealer was pulled over in California and incident to lawful arrest, the officer downloaded the call history to help them find others involved in the drug trade. There is NO COURT to my knowledge that would authorize warrantless search or confiscation of someone's cell data, computer data, jump drives, etc. without an arrest taking place. That is a fishing expedition and it's exactly what the Court has ruled unconstitutional under the 4th amendment. This is where I get very frustrated with the NSAs ability to collect the call information in the first place. The only reason to collect it is to fish later—that's not how the law is supposed to work. These are complex problems that very few judges or lawmakers have enough understanding of technologically to make informed judgement, IMHO, however. EDIT - My best guess is that the Court will allow basic access to a cell phone taken in a lawful arrest. I.E., like the article linked above, an officer would be able to look at the call history, but not necessarily download the content of the phone. I think the offender's brief will likely ARGUE that the phone not be accessed at all, with the true hope being the Court merely limits what officers can do. I have a hard time believing they won't let officers look at any of the electronics with them. I also hope they don't just let officers download everything carte blanche. |
The case we're talking about was search after arrest.
If immunity [to a warrantless search] is to be conceived of as a rule, there is one exception that has been established as firmly as the rule itself. The government may search the person of the accused when legally arrested to discover and seize the fruit or evidences of crime.
also (cited in Harris v US):
The right without a search warrant contemporaneously to search persons lawfully arrested while committing crime and to search the place where the arrest is made in order to find and seize things connected with the crime as its fruits or as the means by which it was committed, as well as weapons and other things of effect an escape from custody is not to be doubted.
Officer safety is one of three motivations for search incident to arrest I've read about; two more are evidence collection (as above), and mitigating the risk that evidence that could later be collected via warrant might be destroyed.
Terry stops, on the other hand, are motivated solely by officer safety.