Mise-Kal

Interactive demonstration

Try the till, the pass, and the money rules

This is a faithful reimplementation of the product's logic running in the browser. It is not a video and not a mockup: the order taking, the server-side total recomputation, the kitchen state machine, and the offline queue all behave the way the real system does.

OFFLINE Adding to the bill is queued to disk. Firing to the kitchen and settling are refused, by design.
Menu
Kitchen display Tap an item to advance it
Server Every money operation happens here, not in the till 

        

      


    


    
    

      

        

          Bill
          #001
        

        

          

          

        

      


      

        

          The invariant
        

        

          

            The server recomputes every total on write. Try to forge one and see
            what happens.
          

          

            
            
          

          

            The request is sent, the server recomputes, and the forged value is
            discarded. The console records both.