[aida] Web+Ajax in Touch panels?

[Giuseppe Luigi Punzi Ruiz]

Imagine a POS system

A pane for the departmens.
When you choose a department, the products pane is refreshed with the  
products of the selected department (each product with his images).
When a product is clicked is added to the lines of ticket pane.

When you click on the waiter name, the sale is finished.

Somebody has tried some similar scenary? The performance could be  
good? (a disco needs speed for example).