Technological convergence is a term that describes bringing previously unrelated technologies together, often in a single device. Smartphones might be the best possible example of such a convergence. Prior to the widespread adoption of smartphones, consumers generally relied on a collection of single$-$purpose devices. Some of these devices included telephones, wrist watches, digital cameras and global positioning system $($GPS$)$ navigators. Today, even low$-$end smartphones combine the functionality of all these separate devices, easily replacing them in a single device.