Regular CART on laptop
This is the baseline configuration. The provider attends whatever event it is that the client needs access to and writes it realtime to the laptop so that he or she can read the text.
Wireless realtime CART
In this setup, the CART provider attends the event with the client, but instead of the client reading captions off of the CART provider's screen, he or she is given a separate laptop (usually a small netbook) which communicates via Bluetooth with the main computer and receives the text. In this setup, the client is free to move around the room within 30-40 feet of the CART provider by carrying around the netbook. This setup is ideal for lab sections where having all of the CART provider's equipment on the table maybe cumbersome or conspicuous. Also, this is a good option for classes with lots of discussions where the client may have to move around frequently.
This is best for larger groups where multiple people (usually all the participants at the event) need to read the captions. The CART provider's laptop is displayed through a projector so that the text is visible for all.
When the CART provider cannot physically attend an event, remote CART is an option. In this configuration, the CART provider will receive the audio via Skype or some other audio connection and sends the captions wirelessly in realtime to an auto-refreshing webpage to which the client logs in and receives the CART services.