Southern Japan has been hit by two serious earthquakes in a matter of days, and those back-to-back disasters may have a significant impact on the tech industry. To start with, Sony has temporarily shut down factories making smartphone camera sensors in Kumamoto and Nagasaki over concerns of possible damage. The company has some inventory to help weather the storm, but it won't have an update until April 18th at the earliest. Any extended downtime could be a problem for the mobile world -- some of the biggest phone makers (including Apple) rely on Sony's sensors, and any significant snarls could hurt their ability to build phones.