Final answer:
Confessions obtained without informing the suspect of their rights and allowing them to waive those rights are not legally admissible in court.
Step-by-step explanation:
In the case of Miranda v. Arizona, the Supreme Court ruled that confessions obtained without informing the suspect of their rights and allowing them to waive those rights are not admissible as evidence in court. This ruling is based on the Fifth Amendment right against self-incrimination and the Sixth Amendment right to an attorney. Therefore, any confessions obtained in a similar manner today would not be legally admissible.