Paging Systems
Busy bistros will sometimes require you to collect your meal from the counter. This saves staff from delivering meals to the tables and can keep the often busy service line moving.
Instead of showing a flashing number or notice board in the hopes the customer will notice it and collect their meal, what are you to do? Why not give the customer a pager that beeps, flashes and sometimes can talk to the customer to let them know their meal is ready for collection.