Symbol Technologies Inc, bar code data transaction system company in Holtsville, New York has reported second-quarter net income up 13.2% at $16.2m on sales up 17.8% at $187.6m. Six-month net rose 15.5% to $31.6m on revenue up 18.7% at $365.9m. Net per share rose 14.3% to $0.40 in the quarter, up 13.2% to $0.77 in the half.