Canada’s plan to build a 5G network, which could be in place around 2020, has come into sharp focus in recent months, following the arrest by Canadian authorities of a high-level executive at China’s Huawei Technologies. Ottawa is now under increasing pressure to block Huawei from developing its 5G technology in Canada, as experts warn it would present a national security risk.
But what are 5G networks exactly? And why the security concerns? Here, we give you a (very) brief explainer on what 5G is, and why it matters: