Touch screens and smartphones are big business, but it's not just human beings that are tapping into the technology.<br /><br />Zookeepers across North America are using iPads to communicate with orangutans.<br /><br />And some of the same patterns seen in people using technology are also being observed in apes.<br /><br />As a part of our special series, Al Jazeera's Caroline Malone takes a look at how great apes are getting to grips with the latest gadgets.
