Cinch was conceived by Ben Coble while he was working at Motorola. It has been devised to help in smooth functioning of a restaurant/bar and is supposed to be used by waiters or waitresses. It informs the respective holder which of their tables [they are responsible for] have been occupied by guests or when the food is ready to be served. Cinch actually works in coordination with other devices one of which is with the hostess, one at the customer table and one with the chef.
Whenever the hostess seats her guests at a particular table she enters the information which via network gets displayed on the Cinch of the respective waiter/waitress. The guests enter their choice from the menu with the help of the table side device. When their order is ready, the chef notifies the waitress via Cinch so that the food is served at the proper table. If anything else is required, the guests could summon the waitress through the table side device instead of waiting for her to appear or call by name. Similarly when they are ready to make the payment, without any delay, they could ask for the bill just with a push of a button which again is relayed to the waitress by Cinch.
To sum up Cinch acts as a handy device for assisting the waiter/waitress in making a smooth and warm service without any delay or hassle just by displaying the required information on it. It is a research oriented concept though.
[source : tuvie.com]