A trained operator writes the exact words spoken using a special phonetic keyboard, or stenography methods, relaying a reliable and accurate translation[1] that is broadcast to the recipient on a screen, laptop, or other device.
[2] CART professionals have qualifications for added expertise (speed and accuracy) as compared to court reporters and other stenographers.
Captioning is mandated by the Americans with Disabilities Act (ADA) as an auxiliary aid or service.
[3] CART is a viable option to use in conjunction with or instead of a sign language interpreter, however, the decision made about which medium should be used should be based on the needs of the individuals who require the service.
In some countries, CART may be referred to as Palantype, Velotype, STTR (speech-to-text reporting).