1. Service buzzers
La Gabinoteca in Madrid, where Anthony Bourdain dined on his show "No Reservations," uses small technological tabletop devices and wristbands that allow diners to call a server to their table or request their check with the press of a button. The wristband then either buzzes or flashes a light at the server to indicate that a dining table needs attention.
An alternative to tabletop tablets, this simple device could provide solutions to full-service venues struggling with service during peak hours.