A coaster pager is a wireless communication device that is commonly used in restaurants, bars, and other hospitality venues to alert customers when their table is ready or their order is ready for pickup. It is called a coaster pager because it is typically designed in the shape of a coaster and resembles one.

When a customer arrives at a restaurant, they are given a coaster pager with a unique identification number. When their table is ready or their order is ready for pickup, the staff member can press a button on a transmitter, which sends a signal to the customer’s coaster pager, causing it to vibrate or emit a beep, notifying the customer that they should return to their table or pick up their order.

Coaster pagers are popular in busy restaurants because they allow customers to move around freely without having to wait in a crowded waiting area. They also allow staff members to manage waitlists and orders efficiently, resulting in a better customer experience.