Locking systems for prosthetic sockets utilizing integrated vacuum and mechanical coupling are disclosed. Front and rear springs, contiguous to front and rear inner housings, respectively, attach to button pin, and front and rear pivot pins, respectively. Data to be transmitted via one of the transmit channels is low code rate error correction encoded and sequence repeated before being modulated with one of the subchannel codes, gain adjusted, and summed with data modulated using the other subchannel codes. The system further includes a controller for controlling activation of the first and second cameras and the presentation of images on the display. Furthermore, the method includes aspects of determining an answer as to whether the access of the data is permitted or denied.