Fit for the future?
Two men slightly obsessed with their health met in a London coffee shop yesterday and talked for half an hour about how they tracked their daily activity levels using the latest technology.
One, an American on a business trip was short of exercise as he'd just arrived on the Eurostar from Paris - but revealed he normally covered at least six miles a day. The other moaned about a crippling back problem that meant his usual daily goal - as measured by a Nike Fuelband - was far out of sight.
The first man was James Park, founder of fitness tracking firm Fitbit, the other was the author of this blog, who combines an interest in the latest gadgets with a middle-aged man's concerns about keeping his weight down and fitness levels up. The question is whether my behaviour is typical enough for Park to be on the verge of something huge - or is this just a small and unprofitable niche?
Wearable technology - from Google Glass to every kind of smart watch - is certainly hot right now, and health and activity monitoring is a key area sparking interest.
Fitbit, founded in San Francisco six years ago, claims to be the leader of the pack, with a bigger range of products and better distribution than the likes of the Jawbone Up or Nike's Fuelband.
Technology firms seek government surveillance reform
The fact that eight technology giants which are normally bitter rivals have united to condemn the extent of government surveillance shows just how strongly they feel.
In part, this reflects the libertarian thinking that permeates Silicon Valley - but there's also a commercial aspect to their concerns.
Tagging your world
He's the man who built one of Britain's most successful software businesses, reaped a huge fortune when it was sold to Hewlett Packard - and then went to war with the American company over what Autonomy was really worth.
Now Mike Lynch has put some of his money into what could prove a really innovative software venture - but one which may signal more conflict with HP.
Universal credit - an IT fiasco?
It's an ambitious plan to transform the benefits system - but it looks as though the technology meant to power universal credit is turning into another great government IT disaster.
This morning the work and pensions secretary Iain Duncan Smith told the BBC that the planned 2017 deadline for the programme would probably slip - although the DWP statement still talks optimistically of the continued "safe and secure roll-out" of the scheme.
Bitcoin virtual currency breaks $1,000 mark
It has been an extraordinary year for the currency, which attracts disciples and detractors in similar numbers.
Back in January, when only a dedicated band of libertarians and uber-geeks knew much about it, one bitcoin was worth under $20 - but as people began writing about its attractions, the value soared.
The Bitcoin bungler - a salutary tale
Here's a cautionary tale for anyone thinking of climbing aboard the Bitcoin bandwagon. You could lose your entire investment in a moment of carelessness. Then again, you would have to be as daft and forgetful as me.
Here's how it happened. Back in the spring I acquired some Bitcoins - well about half a Bitcoin - to carry out an experiment on behalf of Radio 4's PM programme. I wanted to see how easy it was to use the virtual currency to buy something real - in this case a pizza.
Consoles: One box to rule them all?
A titanic battle for the living room is under way, as Microsoft's Xbox One and Sony's Playstation 4 try to offer us the all-purpose device that will give us all the entertainment we need. The convergence we've been told about for years is happening and it looks like a games console.
Well, that has been the narrative for quite a while - but I'm not so sure it is true any more. I've a hunch that the quest to produce one box that will be all things to all people may be doomed to failure. Or at least may end up as a minority pursuit.
Global launch for Microsoft Xbox One console
Both consoles seem destined to do well - but neither is likely to replace all the other boxes under the TV in most homes. Whatever the industry may tell you about the ever widening audience for games in all their forms, many people just won't want an Xbox or Playstation controller to be their route into a night in front of the telly. And having tried the Xbox One's voice control, it is clever, but in my view not quite intuitive enough to persuade an older person like me to throw away the remote control.
Making a friendlier Raspberry Pi
In an office deep in London's trendy Shoreditch, Alex Klein is engaged on a mission. He's assembled a small team - an Israeli, an Italian and a smattering of recent Cambridge maths graduates - to address an important task. They are trying to make the Raspberry Pi more user-friendly.
Mr Klein, a former journalist, had his epiphany while he was trying to set up the cheap educational computer for his seven-year-old cousin. "It was totally impenetrable," he says. "The Raspberry Pi for Dummies guide was 400 pages long. It's an incredible piece of tech, but it's something that needs to be unleashed for normal people."
Chatting With Mr Snapchat
He's 23, he dropped out of Stanford, and his start-up is backed by some of the biggest names in Silicon Valley venture capital. Evan Spiegel, founder of Snapchat, could be the next dotcom billionaire from central casting - but only if he's right that people will pay for a social media experience.
Snapchat - for those of you who are over 25 - is a wildly popular mobile app that lets users communicate by sending each other photos which automatically delete after a few seconds. When Evan Spiegel visited London this week - his first time in the UK - he came and gave me a demo.