“To project stereoscopic 3D images, a TV or monitor needs to have a refresh rate of at least 120Hz. While new televisions typically can do that, few older ones can. So most consumers will need to buy a new TV or computer monitor to watch 3D programming, and many may be reluctant to go through the upgrade cycle in the near future after recently replacing their old analog TVs with digital ones. That will be a barrier,” said Jon Peddie, the president of Jon Peddie Research market research firm.