The court has ruled that police don't violate the Fourth Amendment when they go through the wallet or pocketbook of an arrestee without a warrant.

法院裁定，警察在没有搜查令的情况下搜查被捕者的钱包或皮夹，并不违反第四修正案。

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By law prosecutors must apply to the courts within 24 hours after arrest for permission to continue detaining an arrestee.

检察官如果想延长对被逮捕者的羁押期限，依法必须在逮捕后24小时内向法院申请许可。

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Also, she noted that so far it's legally unresolved whether police can copy data from an arrestee's phone for future examination.

CNN: STORY HIGHLIGHTS

While Justice Kennedy agreed that DNA sampling constituted a search of an arrestee's body, he said he considered it a minor intrusion.

WSJ: Supreme Court: Police Can Take DNA Samples in Arrests

One of the last important federally funded studies of this sort, the Arrestee Drug Abuse Monitoring program, had its cash cut off and ceased operation.

FORBES: Magazine Article