Microsoft Surface Pro review: a device of many talents

Jack Schofield: There's much to like about Microsoft's Windows 8 hybrid tablet-laptop – but it's expensive if you don't need all the specs

Boot up: Metro apps usage, Pirate Bay hacking case, iOS 7 + Flickr?, and more

Charles Arthur: Plus IBM's Watson heads towards phones (sorta), how Lotus lost, hyperattentive Kinects, and more

Twitter introduces ‘two-factor authentication’ to stop password hacking

Company introduces mobile phone-based system to stop hackers from capturing control of Twitter accounts. By Charles Arthur

Google’s Eric Schmidt believes one company is an island

A slip of the tongue by Google's executive chairman speaks volumes about his perception of the company's tax obligations

Google boss calls for a ‘rational and predictable international tax system’

Eric Schmidt rejects Ed Miliband's criticisms of tax affairs, saying firm fears being 'double or quadruple taxed' under any changes

Colour footage of London in the 1920s allows us to be tourists in our own past

Jonathan Jones: The full-colour silent era footage that caused so much excitement online recently is almost like science-fiction

Peering at bright screens after dark could harm health, doctor claims

Light from TVs, computers, tablets and smartphones may disrupt sleep and raise risk of obesity, heart disease and depression

George Soros invests in ‘hyperfast’ internet firm

Soros investment vehicle Quantum Strategic Parters injects £50m in fibre-optic company Hyperoptic

Cannes 2013 live blog day 8: Only God Forgives, All Is Lost

All the news, reviews, comment and buzz from the Croisette on day eight of the Cannes film festival

Xbox One: why we need time to figure this out

Keith Stuart: The Xbox One event has had a tough reaction from critics – the same fate befell PlayStation 4. But are we placing too much importance on these strange presentations?

German IT firm seeks autistic workers

SAP says it aims to train 650 workers with autism to become IT specialists by 2020

Cannes 2013: Muhammad Ali’s Greatest Fight – first look review

Stephen Frears's lightweight account of Ali's stand over Vietnam does scant justice to its charismatic central protagonist

Robert Redford on America: ‘Certain things have got lost’

The writer-director uses Cannes press conference to say that the US has lost its way since the second world war, and that rampant development must be controlled

The Great Gatsby meets Baz Luhrmann

Sam Jordison: This might be the best attempt yet to film Fitzgerald's masterpiece. Which is not to say this is a good film