input you would have the number itself in plainview. to some sort of reverse directory, but you have no -- what is the reason to believe it had anything to do with the defendant? >> can the police searched the person's wallet and find the index card with the number for my house? and use the information obtained? >> i believe that the police can examine the contents -- >> examine the contents of the wallet but not read it? or may not the police examine the wallet, finding number -- finding number, and act on that information? yes or no? >> this court has not addressed the reading of information examined in searching for -- >> it seems to me that it is fairly clear that the content that are seized and in the can -- possession of the arrestee, the police can act on it. under the justifications which were reiterated in robinson, the justifications are officer safety and evidence preservation. which does not necessarily encompass reading. the cell phone, you don't have to resolve whether it is appropriate to read paper documents you come acr

. >> how about a plainview announces?rn on the phone, see if there's been a telephone call within a reasonable amount of time of the arrest or any message that was sent at the time of arrest. that's sort of a plain view situation. it would take care of your person with a picture of him or herself with the guns. it would take care of the call to the confederate. it would take care of the imminent destruction of the phone. >> justice sotomayor, i'm not entirely sure how to articulate that principle, but if it fits within the crime of arrest plus identity principle, and i think it would be a reasonable fallback position. if i could reserve the balance of my time. >> thank you, counsel. ms. mizner. >> mr. chief justice, and may it please the court. i'd like to first talk about the encryption that we've been discussing. it's not an issue in this case. it was not an issue in riley. it was not litigated below. the government has just now said that there are a lot of phones arriving at a lab in a locked state, but do we know whet