sony and amazon are the latest major companies to pull out of one of the world's largest tech shows because of risks posed by coronavirus. sony said it would no longer take part in mobile world congress in barcelona after "monitoring the evolving situation". the organiser has said the event, which attracts 100,000 people, will go ahead there's a new ride—hailing app in town — well, in london at least. ola — an indian firm will take on uber as well as other app firms including bolt, kapten and kabbee. uber is currently appealing against a decision to axe its london licence. let's get more on those concerns over the use of non—disclosure agreements — and their potential misuse. recently, a number of high—profile scandals have exposed how ndas are often used