In traditional analogue broadcasting, many programmes are repeated, often in the early hours of the morning, with the signer present rather than have them appear at the main broadcast time. This is due to the distraction they cause to those not wishing to see the signer. On the BBC, many programmes that broadcast late at night or early in the morning are signed. Some emerging television technologies allow the viewer to turn the signer on and off in a similar manner to subtitles and closed captioning.