In DepthHigh-street retailers keep tabs on shoppers with a range of opt-in technologies, apps and services. Here's how.
Tech deals, prizes and latest news
Get the best tech deals, reviews, product advice, competitions, unmissable tech news and more!
Windows 10: release date, price, news and features
10 best mobile phones in the world today
iPhone 7 release date, news and rumors
Best free video editing software: 10 top programs you should use
How Windows 10 will change smartphones forever