A computerized method and system for tracking orders implemented on a trading floor exchange is disclosed. The system is order-centric and is configured to route orders to a booth and floor broker in accordance with a symbol associated with the particular security being traded. Floor brokers communicate with the trading system through handheld devices connected to a handheld server via a wireless interface. A specific protocol for messaging protocol for communications between the handheld devices and the handheld server is also disclosed.