Tenants in Utah are asked to sign a new lease agreement requiring them to "friend" and "like" their apartment complex on Facebook.

Periscope puts its users in charge of policing offensive comments with a crowd-sourced post moderation system.

Smartphone maker Xiaomi buys the rights to hundreds of Microsoft smartphone inventions and will pre-install the US firm's apps as part of the deal.

Hollywood stars Leonardo DiCaprio and Tom Hardy turn up - but won't talk - at the launch of a high-end, high-price smartphone.

Microsoft tackles a problem with its email filters that had prevented them from properly screening out spam.

A UK-developed system capable of jamming signals to small drones is to be trialled by the US aviation authority.