Engineers invented a mechanical hand that can translate the words it heard into sign language. According to Erwin Smith, the creator of the device, his brainchild will change the quality of life of deaf people, becoming for them an inexpensive personal translator. In this way, the hand translator will help reduce the barrier between the deaf community and the outside world. The author believes that the day is not far off when people will begin to take their mechanical hand with them to study, work, or simply going out on business. It will be a convenient personal translator. The technology of the gadget is simple. Perceiving human speech, the device translates it into text, and then checks for updates for all world languages. Further, the robot depicts in a sign language the sentences he has heard. According to the researchers, a mechanical arm is very affordable. You can create it on a 3D printer. In this case, it will cost no more than four hundred pounds. The author of the device has previously described the idea as creating a reliable and cheap assistant, with the possibility of programming it in various languages. The developers explained that they began with attempts to train their hands to show characters. After that, they thought about sign language. To realize their plans, they did not have to completely reproduce the anatomy of a real hand. Only sixteen joints were introduced into the device.Smith with a team of students helping to implement the project, they hope that in the next five years their brainchild will help at least 70 million deaf people around the world who rely solely on sign language to communicate. Their life will change radically. In the meantime, an inexpensive robot arm had to be modified a bit.