0:00:02 > 0:00:04You're the keeper of people's secrets.
0:00:04 > 0:00:05The government wants access.
0:00:06 > 0:00:09Do you give them the keys? Or...
0:00:26 > 0:00:28This week, Click meets the man
0:00:28 > 0:00:31who is sending a message to the US government -
0:00:31 > 0:00:33the only one he wants them to read.
0:00:33 > 0:00:36We're in court with the founder of the e-mail service
0:00:36 > 0:00:40the FBI wanted to crack to get at Edward Snowden.
0:00:40 > 0:00:43We'll also show you where you've been recently,
0:00:43 > 0:00:47and how to disappear from Google's location services.
0:00:47 > 0:00:49And we have the eye-popping headwear
0:00:49 > 0:00:52that could really turn heads in the coming years.
0:00:52 > 0:00:55All that, plus the latest tech news,
0:00:55 > 0:00:58and if you needed another reason to get sucked into the programme,
0:00:58 > 0:01:01we'll show you how to build yourself a black hole in Webscape.
0:01:06 > 0:01:09Welcome to Click. I'm Spencer Kelly.
0:01:09 > 0:01:14Can you ever have a completely private e-mail conversation?
0:01:14 > 0:01:18Well, that's what's been at stake this week in Richmond, Virginia,
0:01:18 > 0:01:22as the latest skirmish in the fight over privacy unfolds.
0:01:22 > 0:01:24Now, as with so much in this area,
0:01:24 > 0:01:27it all goes back to the former NSA contractor Edward Snowden.
0:01:27 > 0:01:30It was, of course, he who brought to light just how much of our data
0:01:30 > 0:01:34and communications are sifted by government agencies.
0:01:36 > 0:01:38Being, of course, aware of this himself,
0:01:38 > 0:01:43Snowden used a highly encrypted personal e-mail service.
0:01:43 > 0:01:47And this week, the spotlight shines on the e-mail provider he used,
0:01:47 > 0:01:50Lavabit. Run by Ladar Levison,
0:01:50 > 0:01:53Lavabit's security was so high,
0:01:53 > 0:01:56it was thought near impossible for even government agencies to crack.
0:01:58 > 0:02:02Last summer, though, Levison was asked to hand over the keys
0:02:02 > 0:02:05that Lavabit used to encrypt the data passing through its servers,
0:02:05 > 0:02:09so the FBI could read the e-mails of one of its users.
0:02:09 > 0:02:12That user is believed to have been Edward Snowden.
0:02:15 > 0:02:18Instead, he shut the service down without warning,
0:02:18 > 0:02:20and issued a statement on his website saying he would not,
0:02:20 > 0:02:24as he put it, become complicit in crimes against the American people.
0:02:27 > 0:02:30Levison is now appealing the government's ruling,
0:02:30 > 0:02:32in what's being seen as one of the most important cases
0:02:32 > 0:02:35for the future of privacy on the internet.
0:02:35 > 0:02:37We sent Jen Copestake to Virginia
0:02:37 > 0:02:39to catch up with him at his appeal hearing.
0:02:48 > 0:02:51It's here at the US Court of Appeals for the Fourth Circuit
0:02:51 > 0:02:53that Ladar Levison of Lavabit
0:02:53 > 0:02:57will have his appeal in front of a panel of three judges.
0:02:57 > 0:03:00He won't hear the decision for several weeks.
0:03:05 > 0:03:08'After the hearing, we head back to Washington DC,
0:03:08 > 0:03:10'where Ladar has been staying.'
0:03:10 > 0:03:14What did you think about the hearing today?
0:03:14 > 0:03:20On the one hand, I'm certainly happy that I finally had my day in court.
0:03:20 > 0:03:26I just hope that the justices are able to parse
0:03:26 > 0:03:30what is a very complex technical question.
0:03:39 > 0:03:44OK, Snowden was nominated for the Nobel Peace Prize...
0:03:44 > 0:03:47The Lavabit appeal could have far-reaching implications
0:03:47 > 0:03:51for the future of internet security. Depending on the outcome,
0:03:51 > 0:03:54it could set a precedent for whether law-enforcement agencies
0:03:54 > 0:03:57can force businesses to hand over encryption keys,
0:03:57 > 0:04:00unlocking all their customers' data.
0:04:00 > 0:04:02Encryption keys secure all communications
0:04:02 > 0:04:04coming in and out of a network,
0:04:04 > 0:04:07but with the large amount of data now being shared online,
0:04:07 > 0:04:11the software needs updating to maintain privacy.
0:04:12 > 0:04:15What most people don't realise
0:04:15 > 0:04:19is that the major mail protocols
0:04:19 > 0:04:22that we use today were created in the '70s...
0:04:24 > 0:04:28..when a half-dozen computers were connected on DARPAnet.
0:04:29 > 0:04:33And everybody knew everybody else that was on the internet.
0:04:33 > 0:04:35And security was never a focus,
0:04:35 > 0:04:40because we didn't think the intelligence agencies
0:04:40 > 0:04:43were collecting all of the communications
0:04:43 > 0:04:47going over the internet. Now that that's become clear...
0:04:48 > 0:04:53..it just illustrates the need for us to rethink...
0:04:54 > 0:04:59..many of the protocols that we use on the internet.
0:04:59 > 0:05:02Ladar has started a new project called Dark Mail,
0:05:02 > 0:05:05which aims to bring encrypted security to everyone,
0:05:05 > 0:05:08not just cryptographers.
0:05:08 > 0:05:11Dark Mail is a joint venture between Lavabit and Silent Circle,
0:05:11 > 0:05:15a company specialising in telephony encryption.
0:05:15 > 0:05:18Silent Circle's president and founder is Phil Zimmermann,
0:05:18 > 0:05:22an internet legend who designed one of the first privacy protocols,
0:05:22 > 0:05:25PGP, or Pretty Good Privacy.
0:05:25 > 0:05:28I have been worried about surveillance technology
0:05:28 > 0:05:31for many years, but what we've seen now, recently,
0:05:31 > 0:05:37from the revelations from Snowden is that the surveillance state
0:05:37 > 0:05:40is becoming more powerful than anyone imagined.
0:05:42 > 0:05:47Everything that we do is being tracked and monitored
0:05:47 > 0:05:52and recorded, and I think it's bad for civil liberties.
0:05:52 > 0:05:54I admire what he did.
0:05:54 > 0:05:56I admire Ladar's decision.
0:05:56 > 0:06:00In fact, that's why we thought it would be nice to work together.
0:06:03 > 0:06:05If he's not successful in his appeal,
0:06:05 > 0:06:09Ladar says he might consider taking the case here, to the Supreme Court.
0:06:09 > 0:06:12But that would have huge cost implications.
0:06:12 > 0:06:13Since shutting down Lavabit,
0:06:13 > 0:06:17Ladar has relied on crowd-funding to pay for his legal fees.
0:06:17 > 0:06:23I've been fortunate that my parents are so proud of me.
0:06:23 > 0:06:26They've been effectively taking care of me
0:06:26 > 0:06:30since I shut down my company, and it's allowed me the ability
0:06:30 > 0:06:33to really become what is almost a full-time activist.
0:06:33 > 0:06:37It's scary to think that our government is slowly gaining
0:06:37 > 0:06:41unfettered access to the entire world's communications,
0:06:41 > 0:06:45and that they are harvesting those communications,
0:06:45 > 0:06:49and storing them for an indefinite period of time.
0:06:49 > 0:06:54I trust the government when they provide adequate transparency
0:06:54 > 0:06:58and I can verify that they are not abusing
0:06:58 > 0:07:01the authority that they have been given.
0:07:01 > 0:07:04I do not trust a government that operates in secret.
0:07:07 > 0:07:11With more revelations on the scope of American spy programmes
0:07:11 > 0:07:13from Edward Snowden being released almost every week,
0:07:13 > 0:07:18the debate over internet privacy is only going to get more intense.
0:07:18 > 0:07:22The discussion, the debate has just started.
0:07:22 > 0:07:24We're going to be discussing these issues
0:07:24 > 0:07:29for the next three, four years. I think there may come a day...
0:07:29 > 0:07:32when the United States is no longer associated
0:07:32 > 0:07:35with the word "freedom" in people's minds.
0:07:37 > 0:07:41The sad thing is that I think I'm too much of an American
0:07:41 > 0:07:44to abandon my country when that happens.
0:07:45 > 0:07:48Jen Copestake in Virginia.
0:07:48 > 0:07:51Well, Jamie Bartlett is a security and privacy researcher
0:07:51 > 0:07:54and specialist, and he's agreed to meet me
0:07:54 > 0:07:57- in this very public location for safety. Jamie, hi.- Hello.
0:07:57 > 0:08:00Is this something that we ordinary people
0:08:00 > 0:08:03who have nothing to hide need to be worried about?
0:08:03 > 0:08:07I think it's really important that people feel they can communicate
0:08:07 > 0:08:10securely, whether it's individuals, businesses...
0:08:10 > 0:08:15It's not just about being able to hide yourself from the government.
0:08:15 > 0:08:17Being able to communicate safely and securely,
0:08:17 > 0:08:20browse the internet securely, is incredibly important,
0:08:20 > 0:08:23because there are plenty of third parties out there,
0:08:23 > 0:08:26nefarious third parties that might want to see what you're doing.
0:08:26 > 0:08:31More broadly, it's the ability to communicate freely
0:08:31 > 0:08:34with fellow citizens or whoever you wish...
0:08:34 > 0:08:36is an extremely important right.
0:08:36 > 0:08:39It's very good for the health of society to be able to do that.
0:08:39 > 0:08:43Can we assume it is now impossible to have a conversation
0:08:43 > 0:08:45away from prying eyes?
0:08:45 > 0:08:49I think it is always safe to assume there's a possibility
0:08:49 > 0:08:53that your online communications are being monitored.
0:08:53 > 0:08:56But actually, there are a lot of pretty good,
0:08:56 > 0:09:00pretty secure ways that you can communicate with other people.
0:09:00 > 0:09:04For example, the use of PGP encryption is relatively simple.
0:09:04 > 0:09:06It's used by a large number of people,
0:09:06 > 0:09:09and it's very, very hard to crack.
0:09:09 > 0:09:12So while there are always ways of security services
0:09:12 > 0:09:15trying to get in, and we don't know exactly what they can and can't do,
0:09:15 > 0:09:19even with these revelations by Edward Snowden,
0:09:19 > 0:09:24it's not quite as easy as people think to monitor everything,
0:09:24 > 0:09:27but equally, there are ways of evading it.
0:09:27 > 0:09:30Does it seems to you that since all these revelations
0:09:30 > 0:09:32have started surfacing,
0:09:32 > 0:09:37more and more ordinary people have decided to take action
0:09:37 > 0:09:40to develop anti-surveillance methods?
0:09:40 > 0:09:45In 1991, what we saw was the launch of something
0:09:45 > 0:09:50called the crypto wars, citizens trying to evade surveillance.
0:09:50 > 0:09:52Counter-surveillance by the people.
0:09:52 > 0:09:55And I think we are entering into a second crypto wars.
0:09:55 > 0:09:58Over the last 12 months or so,
0:09:58 > 0:10:01there's been a pretty dramatic increase in both
0:10:01 > 0:10:05technical software developers and ordinary citizens
0:10:05 > 0:10:09figuring out ways of trying to evade surveillance,
0:10:09 > 0:10:12a sort of citizen counter-surveillance movement.
0:10:12 > 0:10:15There's been a growth in crypto parties around the world,
0:10:15 > 0:10:18where people learn how to use PGP encryption,
0:10:18 > 0:10:20or browse the net anonymously.
0:10:20 > 0:10:23And there's very interesting new software being developed for,
0:10:23 > 0:10:27for example, a secure alternative to Skype called Jitsi.
0:10:27 > 0:10:31There's new ways of being able to send text messages more anonymously,
0:10:31 > 0:10:33and that includes Chinese dissidents,
0:10:33 > 0:10:35ordinary citizens who just want to make sure
0:10:35 > 0:10:38that their communications are secure, but of course, exactly the same tools
0:10:38 > 0:10:43and techniques are going to be used by serious and organised criminals.
0:10:43 > 0:10:46So that's the great challenge that we face.
0:10:46 > 0:10:48OK, Jamie, thank you very much for your time.
0:10:48 > 0:10:50If anyone asks, we weren't here.
0:10:51 > 0:10:54Now, of course, it's not just governments who are after your data.
0:10:54 > 0:10:58Sometimes, it's companies who are providing you a service
0:10:58 > 0:11:01and which you've agreed can track you in the first place.
0:11:01 > 0:11:03Take a look at this.
0:11:03 > 0:11:05The lunar New Year is the reason behind
0:11:05 > 0:11:08the world's biggest annual migration.
0:11:08 > 0:11:10Gong xi fa cai, by the way.
0:11:10 > 0:11:12And these coloured lines show the movement
0:11:12 > 0:11:15of hundreds of millions of people over this period.
0:11:15 > 0:11:17Their locations have been tracked
0:11:17 > 0:11:21because they use the largest search engine in China, Baidu.
0:11:23 > 0:11:27And over here, if you've allowed Google to access the location data
0:11:27 > 0:11:32from your smartphone, the same thing is happening to you all the time.
0:11:32 > 0:11:34Take a look at this.
0:11:34 > 0:11:38If you go into Google dashboard, you can access any location data
0:11:38 > 0:11:39that's being collected on you.
0:11:39 > 0:11:42For example, here's what I got up to during our visit
0:11:42 > 0:11:45to the Consumer Electronics Show in Las Vegas a few weeks ago.
0:11:45 > 0:11:48You can cycle through each day to see, for example,
0:11:48 > 0:11:51where the boss went skiing earlier this month,
0:11:51 > 0:11:53or you can chart my driving trip
0:11:53 > 0:11:56out of Las Vegas and into the desert.
0:11:56 > 0:12:01Pretty cool. Or spooky, depending on your point of view.
0:12:01 > 0:12:04Now, of course, you may very well know that you signed up
0:12:04 > 0:12:06for something like this, but let's be honest,
0:12:06 > 0:12:09sometimes apps can install on our phones
0:12:09 > 0:12:10and we agree to the permissions
0:12:10 > 0:12:13without really realising the consequences.
0:12:13 > 0:12:16Fortunately, you do have control over what Google can see
0:12:16 > 0:12:19of your location. You can switch it off entirely
0:12:19 > 0:12:23through the dashboard, or delete any or all of your history.
0:12:23 > 0:12:27Anyway, next up, it's a look at this week's tech news.
0:12:27 > 0:12:30And more from Edward Snowden first,
0:12:30 > 0:12:33with revelations that British intelligence agencies have been
0:12:33 > 0:12:36snooping on users of YouTube, Facebook and Blogger.
0:12:36 > 0:12:39The leaks, published by America's NBC network,
0:12:39 > 0:12:43suggest that in 2012, GCHQ monitored Facebook likes and comments
0:12:43 > 0:12:45that weren't supposed to be public.
0:12:45 > 0:12:49Facebook says it has since encrypted much of its data.
0:12:49 > 0:12:52All three companies have denied granting GCHQ access
0:12:52 > 0:12:54to their servers.
0:12:54 > 0:12:57It also emerged that both the NSA and GCHQ
0:12:57 > 0:12:59made use of information leaks from mobile phone applications,
0:12:59 > 0:13:01including Angry Birds,
0:13:01 > 0:13:06many of which send out the handset's ID and location on a regular basis.
0:13:06 > 0:13:10GCHQ hasn't commented, but some hackers have,
0:13:10 > 0:13:12by defacing the Birds website.
0:13:13 > 0:13:16Orange has become the first major operator to include
0:13:16 > 0:13:20Europe-wide calls and data use in a monthly subscription plan.
0:13:20 > 0:13:23The move is expected to be copied by other EU operators
0:13:23 > 0:13:26after regulators promised to stamp out roaming charges by 2016.
0:13:26 > 0:13:29It may not save customers much cash, though.
0:13:29 > 0:13:33The cheapest of the two tariffs starts at 90 euros per month.
0:13:33 > 0:13:36Last year, UK operator 3 did something similar
0:13:36 > 0:13:39across 11 countries, including the US,
0:13:39 > 0:13:43reporting a tenfold increase in data used in those countries.
0:13:43 > 0:13:47And finally, another step forward in the world of 3D printing.
0:13:47 > 0:13:49Perhaps the ultimate one,
0:13:49 > 0:13:52as Stratasys unveiled the first machine
0:13:52 > 0:13:56that can print objects made of mixed and multicoloured materials.
0:13:56 > 0:13:59The company claims that the 330,000 machine
0:13:59 > 0:14:02will halve the time it takes to create prototypes
0:14:02 > 0:14:04by using triple jetting,
0:14:04 > 0:14:06mixing differing amounts of coloured dyes,
0:14:06 > 0:14:11rubber and plastic simultaneously to create the desired object.
0:14:15 > 0:14:19Last week, we had another reminder of the heat and hype
0:14:19 > 0:14:21surrounding wearable displays,
0:14:21 > 0:14:25when one American start-up raised a quarter of million dollars
0:14:25 > 0:14:30in just one day to crowd-fund its unique headset.
0:14:30 > 0:14:33And with mounting speculation that Google might finally be ready
0:14:33 > 0:14:36to release its own Glass eyewear,
0:14:36 > 0:14:40Dan Simmons has been looking at the pros and cons
0:14:40 > 0:14:41of looking like a cyborg.
0:14:43 > 0:14:44Heads up.
0:14:44 > 0:14:48Eyewear is the focus for many developers at the moment,
0:14:48 > 0:14:51most of whom are popping tiny screens into headsets.
0:14:53 > 0:14:56But one start-up is hoping we will look at things
0:14:56 > 0:14:57in a very different way.
0:15:00 > 0:15:04Inside, the player is actually looking at two million mirrors
0:15:04 > 0:15:08that flip around to bounce light straight into the eye.
0:15:08 > 0:15:11Special lenses help bring that image into focus,
0:15:11 > 0:15:13so there's no need for a screen.
0:15:13 > 0:15:17The result, it is claimed, is a pixel-less, stunning image,
0:15:17 > 0:15:20although there's still a year or so of testing to be done.
0:15:22 > 0:15:24Using more conventional means,
0:15:24 > 0:15:28Sony has had a home-theatre headset available since 2012,
0:15:28 > 0:15:30but its latest version tracks your head movements
0:15:30 > 0:15:34courtesy of a gyroscope and accelerometer in the back,
0:15:34 > 0:15:37so wearers can look around the scene.
0:15:37 > 0:15:41For dedicated gamers, the Oculus Rift headset goes even further,
0:15:41 > 0:15:46with a 360-degree game world fed through two HD screens.
0:15:46 > 0:15:49And then there are headsets made for the real world.
0:15:49 > 0:15:53This pair from Recon hits the market in the next few months,
0:15:53 > 0:15:56making use of specific apps for each situation,
0:15:56 > 0:16:00linking up to the net to overlay real-time data.
0:16:01 > 0:16:03OK, Glass.
0:16:03 > 0:16:07Get directions to... Covent Garden Station.
0:16:07 > 0:16:11Perhaps the most famous of these is Google Glass.
0:16:11 > 0:16:12Still in beta testing,
0:16:12 > 0:16:16the voice-activated specs hook up to your smartphone,
0:16:16 > 0:16:18offering a heads-up map with directions,
0:16:18 > 0:16:22web searches, or to share pictures or videos that you might take
0:16:22 > 0:16:24using the built-in camera.
0:16:24 > 0:16:27But why not simply use your smartphone?
0:16:27 > 0:16:30Phones are quite anti-social, when you think about it.
0:16:30 > 0:16:31If you want to do an activity,
0:16:31 > 0:16:33you have to look down and take it out of your pocket.
0:16:33 > 0:16:36Whereas having a headset, it allows you the freedom
0:16:36 > 0:16:38to actually just get on with your life.
0:16:38 > 0:16:41You see something interesting, you can have a photo taken.
0:16:41 > 0:16:43You can have a conversation with someone and engage with them
0:16:43 > 0:16:46without having to fact-find by sneaking around through your pocket.
0:16:46 > 0:16:50But is it cool to look like this?
0:16:50 > 0:16:51The problem is, it looks quite...
0:16:51 > 0:16:55I don't want to say ugly, but it is very much kind of un-aesthetic.
0:16:55 > 0:16:57People don't want to wear things that are obviously technology.
0:16:57 > 0:16:59They want something sleek,
0:16:59 > 0:17:00sunglasses or a pair of normal glasses
0:17:00 > 0:17:03that incorporates technology in a more easy-to-use way.
0:17:04 > 0:17:06Sony is experimenting with this pair,
0:17:06 > 0:17:10that adds info to what you can see while watching TV,
0:17:10 > 0:17:13if you're willing to look like Jason Bradbury for a bit.
0:17:15 > 0:17:18Sony likes the idea of not having to look at a second device,
0:17:18 > 0:17:23maybe a mobile phone, but rather letting fans just watch the game.
0:17:23 > 0:17:25You don't take your eyes off the screen,
0:17:25 > 0:17:29because all the information you might need, like the goal score line
0:17:29 > 0:17:31or tweets that come up from other fans,
0:17:31 > 0:17:33appear right before your eyes.
0:17:35 > 0:17:37The company is adding more functions,
0:17:37 > 0:17:41and claims its design makes me look so much better than Google's.
0:17:41 > 0:17:44And with the discreet way that we display information internally
0:17:44 > 0:17:46so that only the wearer sees it,
0:17:46 > 0:17:49there's no reason for you to have to constantly move your eyes
0:17:49 > 0:17:51up and away and break that eye contact
0:17:51 > 0:17:53and ultimately cause a distraction to your audience,
0:17:53 > 0:17:55if you're speaking to someone.
0:17:55 > 0:17:58The lack of arms on this prototype, of course,
0:17:58 > 0:18:01would probably prove even more distracting.
0:18:02 > 0:18:04And perhaps the most futuristic vision is offered
0:18:04 > 0:18:09by these space glasses from Meta, that create virtual interfaces,
0:18:09 > 0:18:14like a laptop or model for the user to manipulate with their bare hands.
0:18:14 > 0:18:17Only the wearer can see what they're doing, which,
0:18:17 > 0:18:21to the rest of us, could make them look particularly stupid.
0:18:23 > 0:18:28Dan Simmons. And as if they heard Dan coming, take a look at this.
0:18:28 > 0:18:31Google has released some snaps of frames
0:18:31 > 0:18:34it will offer for sale to use with its Glass product,
0:18:34 > 0:18:39including these sleek pairs of shades, which will sell for US 150.
0:18:39 > 0:18:42So, even if that doesn't convince you that headsets can look cool,
0:18:42 > 0:18:46at least no-one will recognise you while you're wearing them.
0:18:46 > 0:18:48And now it's time for our ever-sensible look
0:18:48 > 0:18:50at all that's best on the web.
0:18:50 > 0:18:52Here comes Kate Russell with Webscape.
0:18:58 > 0:19:01World Of Warplanes is a free-to-play dog-fighting sim
0:19:01 > 0:19:05that delivers adrenaline-pumping, massively multiplayer team action
0:19:05 > 0:19:09in an authentic line-up of over 100 different aircraft
0:19:09 > 0:19:12from the golden era of military aviation.
0:19:12 > 0:19:15Upgrades and customisations can be earned over time,
0:19:15 > 0:19:19or you can pay with real-world cash for some in-game currency
0:19:19 > 0:19:21if you're too impatient to wait.
0:19:28 > 0:19:33Flying anything from the biplanes of the 1930s
0:19:33 > 0:19:36up to the first jet planes of the 1950s,
0:19:36 > 0:19:41this is fast and furious dog-fighting fun,
0:19:41 > 0:19:44where teams of 15 players on each side are pitted against each other
0:19:44 > 0:19:47in a battle to the death.
0:19:47 > 0:19:50There are already millions of pilots signed up on the site,
0:19:50 > 0:19:55so you'll never be short of someone to shoot out of the skies.
0:19:55 > 0:19:59It is a hefty old download, but well worth the wait,
0:19:59 > 0:20:02as you'll be out on the aerial battlefield in no time
0:20:02 > 0:20:06once installed, as the learning curve is very comfortable.
0:20:06 > 0:20:09The YouTube channel is a great place to head while you wait
0:20:09 > 0:20:12for the download, where they've done a really nice job of presenting
0:20:12 > 0:20:15tutorials and guides with a historic newsreel feel
0:20:15 > 0:20:17to get you in the mood.
0:20:25 > 0:20:28The cameras in modern smartphones are now such good quality,
0:20:28 > 0:20:32they can realistically replace expensive digital cameras.
0:20:32 > 0:20:36But if you want all the specialist shooting styles and features,
0:20:36 > 0:20:39you're going to need a folder full of apps as well.
0:20:39 > 0:20:43But not if you download A Better Camera for Android,
0:20:43 > 0:20:47which gives you all the multi-functions of a high-end camera
0:20:47 > 0:20:48through one central dashboard.
0:20:49 > 0:20:54# Pictures of Lily made my life so wonderful... #
0:20:55 > 0:20:59This app is all about capturing the moment.
0:20:59 > 0:21:03There are no post-production filters or touch-up tools in here.
0:21:03 > 0:21:06It doesn't even save your photos inside the app.
0:21:06 > 0:21:10They just go straight to the camera roll like normal photos.
0:21:10 > 0:21:14There are loads of great features, including burst photography,
0:21:14 > 0:21:19night shot, panoramas, and HDR, or high dynamic range,
0:21:19 > 0:21:22with no lengthy processing time required.
0:21:22 > 0:21:24While the app is free,
0:21:24 > 0:21:26some of the features included are in trial mode,
0:21:26 > 0:21:29so you'll have to pay eventually if you want to keep them.
0:21:29 > 0:21:31# Pictures of Lily... #
0:21:35 > 0:21:37For today's internet generation,
0:21:37 > 0:21:39it's all about being disposable.
0:21:39 > 0:21:41If you want the Snapchat appeal
0:21:41 > 0:21:44in the form of social media platform Twitter,
0:21:44 > 0:21:48then you've come up with Kwikdesk.
0:21:48 > 0:21:54# It's better than a letter
0:21:54 > 0:21:57# I'm sending it you... #
0:21:57 > 0:22:01This completely anonymous social platform is a way of sending
0:22:01 > 0:22:07messages of up to 300 characters out into the great unwashed internet.
0:22:07 > 0:22:11After typing it up, you select how long the message will remain
0:22:11 > 0:22:14in the system for before it self-destructs,
0:22:14 > 0:22:18for one, ten or 100 days from when you hit send.
0:22:18 > 0:22:21The public timeline is hidden,
0:22:21 > 0:22:23so you can't just browse through the post.
0:22:23 > 0:22:26You'll have to find a hashtag to query instead.
0:22:26 > 0:22:29If all this makes you ask why,
0:22:29 > 0:22:33the only sensible answer is probably...why not?
0:22:33 > 0:22:36It's actually been launched as a piece of conceptual art
0:22:36 > 0:22:38by Irish photographer Kevin Abosch.
0:22:38 > 0:22:42Not everything interesting online needs a purpose.
0:22:42 > 0:22:48# With the letters of your name... #
0:22:48 > 0:22:5160 Second Adventures In Astronomy...
0:22:51 > 0:22:53How do you make a black hole?
0:22:53 > 0:22:56Apart from the obvious answer - very carefully -
0:22:56 > 0:22:59that is the topic of this week's video of the week.
0:22:59 > 0:23:03From the Open University's 60 Second Adventures In... series,
0:23:03 > 0:23:06which are well worth checking out on their YouTube channel.
0:23:06 > 0:23:09Chandrasekhar calculated that if a star is big enough,
0:23:09 > 0:23:12when its fuel runs out, there is nothing to stop gravity
0:23:12 > 0:23:14from making its core collapse to create a black hole.
0:23:14 > 0:23:17Unfortunately for Chandrasekhar, his contemporaries,
0:23:17 > 0:23:20like Sir Arthur Eddington, just didn't believe him,
0:23:20 > 0:23:22but it turns out he was right, and in 1983,
0:23:22 > 0:23:25he eventually won a Nobel Prize for it.
0:23:25 > 0:23:28From Dark Mail to black holes in just under 25 minutes.
0:23:28 > 0:23:30Don't say we're not good to you.
0:23:30 > 0:23:32And of course, Kate's links are available at our website
0:23:32 > 0:23:35if you missed them. bbc.co.uk/click is the address you need.
0:23:35 > 0:23:38And if you have an opinion on anything you've seen today,
0:23:38 > 0:23:41and I suspect you just might, we'd love to hear it.
0:23:43 > 0:23:46We're also on Twitter, Facebook and Google+ too.
0:23:46 > 0:23:47That is it for now, though.
0:23:47 > 0:23:50Thank you very much for watching, and we'll see you next time.