Having worked in health care for thirty years, I know what a call light means for a patient. Having been a patient, and seen loved ones as patients, I know what a call light means. When you need help, there has to be a way of letting someone know. The same concept appplies when you are in a restaurant, but I never thought about it until we went for Chinese food at Wild Ginger in Great Falls, Virginia. At the end of the table was a button about the size of a coaster. On it read "please press the button if any service needed." Since we were well attended to, there was no need to push the button. It's made by Singcall - a wireless calling system. Perhaps they are everywhere, but this is the first time we noticed. I can see the usefulness when you want to get the waitstaff attention for any reason. Have any of you had experience with this? I'm guessing that if you are an attentive individual, you probably don't need to rely on someone having to buzz you to get your attention. But things can get busy and this device might avoid potential problems. Anyway, it's interesting to see what else will be introduced that we got along without before - for better or worse.