Star Trek: Deep Space Nine
A dataport was a device that allowed a person to interface directly with a computer. Dataports also allowed information to be transferred to or from a person's mind, including memories, which could then be stored in data crystals. A third capability of dataports was allowing two people to link minds; in that capacity, they were used by net-girls, among others, who allowed paid customers into their minds. The typical dataport had three parts: one which was implanted behind the person's ear, one which was attached to the implant, and one which attached to the target computer.