Due to the amazing advances in information and communications technologies, we're heading for an online world in which convenience goods have unprecedented computing power and are permanently connected to the Internet or stored in the cloud. The Internet is everywhere, and now people are talk ing about the Internet of Things (IoT). Look at your own belongings; it's likely that you carry around at least one or possibly several handheld devices such as smartphones that are permanently connected to the Internet. Each device has computing power that was sufficient for navigating a rocket to the moon 40 years ago. Now we use that power to download and play songs and movies, access social media such as Facebook or Twitter, run e-mail or messenger software, or access any of the other myriad apps people have created recently.