Logitech, the worldÔÇÖs biggest maker of mice as well as webcams and other computer accessories, has announced it is to buy video conferencing company LifeSize Communications for $405 million. Austin, Texas-based LifeSize provides high-definition video conferencing products to more than 9,000 customers in over 80 countries. Its clients include public healthcare, education and government organizations, as well as private businesses. The deal marks a significant move by Logitech, which is based in Freemont, California, and Romanel-Sur-Morges, Switzerland, to break into the