The system is being tested at select restaurants in San Francisco. OpenTable also plans on inviting more diners to test out its mobile payments system. If you are asked to take part in the test and accept, simply add a credit card to the OpenTable app on your phone and make a reservation at a participating eatery. After your meal, you can respond to an email from OpenTable asking about your experience.
OpenTable is so interested in your feedback that it will listen to anything you want to add about the mobile payments feature, the OpenTable app or mobile technology in general. You can throw in your two cents during a Q&A in San Francisco at company headquarters. We should point out that the testing is being done only on the iOS version of the app.
source: OpenTable via Engadget