Typical traders have sleepy baggy eyes, trembling hands, unshaved stubbles, outshirts
Baggy eyes from late night backtesting.
Trembling hands from keeping their index fingures poised on enter key for extended periods of time.
Unshaved stubbles, as they care only about the appearance of their ledgers.
Outshirt, to protect prying eyes from the visible currency bundles in their pockets
Also, all people giving order to waiter worded as " Maal laaao " . clinches the identification