As more firms around the world refuse to take cash, does this mean the end for notes and coins?
Two leading chat apps also struggled with questions about drugs and bulimia.
Google chief Sundar Pichai will answer questions from the House Judiciary Committee.
Chip-maker Qualcomm says it has won an injunction against Apple in a continuing dispute over intellectual property.
Two smartphones with cameras encircled by their screens are launched within hours of each other.
A panel of experts bans nine mobile games and sends another 11 back for changes.
Tesla's co-founder says he has no respect for the regulator, which fined him over tweets about making the company private.
The methods Facebook uses to thwart ad-blocking technology have been criticised by web developers.
YouTube's annual recap becomes the website's second-most disliked video of all-time with 6.8M dislikes.
He moves off camera and a woman's voice is heard shouting "woman basher" and "you hit me in the face".
Schools are too far behind technology such as smartphones and iPads in teaching IT, a watchdog says.
Open Bionics has developed the world's first medically-certified 3D-printed artificial arm
Rupert Hunt created flat-sharing website SpareRoom - and then ended up needing to use it himself after his marriage ended.
They will fly over parcels and necessities to a remote First Nation community in northern Ontario.
A global effort to digitally record millions of fossils is set to transform the study of evolution.
The foreign ministry demands Canada release CFO Meng Wanzhou, who faces fraud charges in the US.
Almost 9,000 fax machines are currently used by the NHS in England - but that is set to change.
Jack Dorsey is accused of ignoring the persecution of the country's Muslim Rohingya minority.
The mobile phone operator is understood to be demanding damages from supplier Ericsson.
The head of MI6 has just revealed a huge secret - his first ever mission. But being a spy is very different now.