BlackBerry’s CEO John Chen clings to the firm’s once-iconic smartphones, in the teeth of all the reasons why the company should focus its whole attention on back end systems, the enterprise messaging and device management services in which it still excels. To be fair, Chen is managing expectations ably, emphasizing the long term and looking for new opportunities ‘ among which, the internet of things is clearly a prime candidate. In that respect, BlackBerry has a weapon which could belatedly prove a killer one ‘ its QNX operating system. BlackBerry has unveiled a set of initiatives under the umbrella codename of Project Ion. The IoT may be the refuge for every firm which is struggling in the mobile market, but…