0:00:15 > 0:00:16Now you see me...
0:00:18 > 0:00:19..now you don't.
0:00:34 > 0:00:37This week, Click goes under the radar
0:00:37 > 0:00:41to try on the tech that blinds Big Brother.
0:00:41 > 0:00:44And how about this for the ultimate overview?
0:00:44 > 0:00:48We'll catch the camera that catches everything from up on high.
0:00:48 > 0:00:51The robots are coming, and they're teaming up.
0:00:51 > 0:00:55These are the bots that are learning to work together.
0:00:55 > 0:00:57All that, plus the latest Tech News
0:00:57 > 0:01:00and a tool to protect your reputation online in Webscape.
0:01:07 > 0:01:09Welcome to Click. I'm Spencer Kelly,
0:01:09 > 0:01:13or Citizen 42509776
0:01:13 > 0:01:16for any fans of George Orwell's novel, 1984.
0:01:16 > 0:01:18In that dystopic vision of the future,
0:01:18 > 0:01:21we all have all-seeing TV sets in our homes,
0:01:21 > 0:01:24watching and critiquing our every move.
0:01:24 > 0:01:27Now, although that hasn't happened...yet,
0:01:27 > 0:01:31some would say, in 2014, we're not that far off.
0:01:31 > 0:01:33For example, here in the UK, we are
0:01:33 > 0:01:36all caught on camera around 70 times every day.
0:01:38 > 0:01:42Last year's NSA revelations by whistle-blower Edward Snowden
0:01:42 > 0:01:45revealed the full scope of the intelligence community's
0:01:45 > 0:01:47data-trawling operation.
0:01:47 > 0:01:53In March 2013 alone, the NSA collected a massive 97 billion
0:01:53 > 0:01:57pieces of intelligence from computer networks worldwide.
0:01:57 > 0:01:58But it's, of course,
0:01:58 > 0:02:02not just intelligence agencies collecting data on us.
0:02:02 > 0:02:05Whether it's our friends or ourselves,
0:02:05 > 0:02:08huge swathes of our lives now exist online,
0:02:08 > 0:02:10with services like Facebook and Twitter.
0:02:12 > 0:02:16On top of that, computers are getting much better at facial
0:02:16 > 0:02:20recognition these days, which means wherever you appear in a photo
0:02:20 > 0:02:23or video, including in the background of this shot,
0:02:23 > 0:02:27you could be identified, whether you like it or not.
0:02:27 > 0:02:32We've been to New York, Amsterdam and Tokyo to meet the people
0:02:32 > 0:02:36who are trying to hide their faces from the internet.
0:02:39 > 0:02:42Information is becoming kind of a weapon,
0:02:42 > 0:02:44though we don't view it in that way.
0:02:44 > 0:02:46We don't have the tools to deal with it,
0:02:46 > 0:02:48or protect ourselves in that way.
0:02:50 > 0:02:52The whole thing of, "Well, I have nothing to hide,"
0:02:52 > 0:02:54I think is quite strange.
0:02:54 > 0:02:56Just because you have nothing to hide,
0:02:56 > 0:02:59that doesn't mean it's OK that these things are happening.
0:03:00 > 0:03:04If we want to execute our right to privacy,
0:03:04 > 0:03:07we just wear some special glasses.
0:03:10 > 0:03:13Hi, I'm Adam Harvey, an artist in New York.
0:03:13 > 0:03:18I'm working with surveillance, fashion, privacy
0:03:18 > 0:03:20and what that means in today's context.
0:03:20 > 0:03:25It bothers me a lot to know that when I do those average,
0:03:25 > 0:03:28day-to-day things, that somebody could be watching me.
0:03:28 > 0:03:32And that is really a frustrating feeling, to know
0:03:32 > 0:03:37that you always have a chaperone or somebody monitoring what you do.
0:03:39 > 0:03:44The Anti-Paparazzi Clutch is a project I started in 2009,
0:03:44 > 0:03:48and it's a device that goes inside of a purse,
0:03:48 > 0:03:51and when a paparazzi photographer takes your photo,
0:03:51 > 0:03:55it flashes back with enough light so that it overexposes the photo.
0:03:55 > 0:03:59Technically, it has a device, a sensor
0:03:59 > 0:04:03which looks for a flash coming from a camera.
0:04:03 > 0:04:07As soon as that happens, it triggers a bank of LEDs.
0:04:07 > 0:04:11What's unique about that is that there's no recycle time.
0:04:11 > 0:04:16Some flashes have that. So this can fire as often as you need it to.
0:04:16 > 0:04:21And the time it takes for the light to be triggered is short enough
0:04:21 > 0:04:26that it will hit the photographer's sensor and overexpose their photo.
0:04:28 > 0:04:32'I don't necessarily want to sound like the angry artist or designer.
0:04:32 > 0:04:36'It's not necessarily about that.
0:04:36 > 0:04:38'It's not really about paranoia or anything.'
0:04:40 > 0:04:46The idea is that you could have something that is reflective
0:04:46 > 0:04:48or reacting to light differently,
0:04:48 > 0:04:50so if you take a photo,
0:04:50 > 0:04:53you basically get lights out of your eyes.
0:04:53 > 0:04:57That would obstruct the face and make it unrecognisable.
0:04:57 > 0:05:01So, it's something you wouldn't see in normal light or normal
0:05:01 > 0:05:05situations, but it does help you to obstruct yourself.
0:06:45 > 0:06:48I started a project called CV Dazzle,
0:06:48 > 0:06:51which is an ongoing project which explores how
0:06:51 > 0:06:55analogue technologies like make-up and hairstyles
0:06:55 > 0:06:59can be used to protect yourself from face detection.
0:06:59 > 0:07:03So, if you can prevent an algorithm from detecting a face,
0:07:03 > 0:07:08then you prevent that automated system from analysing you further.
0:07:08 > 0:07:13And I think CV Dazzle is in an interesting grey area,
0:07:13 > 0:07:17because it allows you to be seen by someone else.
0:07:17 > 0:07:22You're not wearing a ski mask or a balaclava in public, but you don't
0:07:22 > 0:07:26appear in these automated systems, and so you're protecting your data.
0:07:26 > 0:07:29Another recent project is called Stealth Wear,
0:07:29 > 0:07:32and this project is a set of garments
0:07:32 > 0:07:38that are made with a metal-plated fabric, which is reflective to heat.
0:07:38 > 0:07:43That means it can shield your thermal signature from a thermal camera.
0:07:43 > 0:07:46I see Stealth Wear as a provocation.
0:07:46 > 0:07:50It shields you from drones, and it can also protect
0:07:50 > 0:07:53you from where the future of surveillance is headed.
0:07:53 > 0:07:57A big problem right now is mobile phone tracking.
0:07:57 > 0:07:59When you walk around with your phone,
0:07:59 > 0:08:05you're giving away data to people who can use that to build profiles.
0:08:05 > 0:08:09And the data is where you've been, but also who you're around.
0:08:09 > 0:08:14The OFF Pocket is a phone case. It's all flexible, fabric-based.
0:08:14 > 0:08:20It uses metal-plated fabric to shield the phone from wireless signals.
0:08:20 > 0:08:23As soon as you put your phone inside and close it,
0:08:23 > 0:08:26then no signals can enter or exit the bag.
0:08:26 > 0:08:29I don't think total privacy is realistic,
0:08:29 > 0:08:34and I don't think it's what we are asking for collectively.
0:08:34 > 0:08:37I think that a modest amount of privacy,
0:08:37 > 0:08:41which is guaranteed by the Constitution in the US,
0:08:41 > 0:08:45has been violated and needs to be re-established.
0:08:47 > 0:08:49Some pretty ingenious ideas, weren't they?
0:08:49 > 0:08:51Maybe you've had some thoughts
0:08:51 > 0:08:53on ways to physically protect your image and your face
0:08:53 > 0:08:56from the prying eyes of CCTV.
0:08:56 > 0:09:01Why not let us know? The crazier, the better. Tweet us...
0:09:01 > 0:09:05We'd love to hear from you. Next up, a look at this week's Tech News.
0:09:05 > 0:09:09The patent war between two tech giants continues,
0:09:09 > 0:09:13with a ruling from a US judge that Samsung has infringed
0:09:13 > 0:09:16Apple's word recommendation technology.
0:09:16 > 0:09:19The invention describes a way for touch-screen devices
0:09:19 > 0:09:21to suggest completed words,
0:09:21 > 0:09:24after a user has started typing them.
0:09:24 > 0:09:27This comes ahead of a trial in which both companies planned to claim
0:09:27 > 0:09:29that the other one copied their ideas.
0:09:29 > 0:09:35The fastest ever broadband speeds have been achieved in London.
0:09:35 > 0:09:38The joint test between British Telecom and Alcatel Lucent
0:09:38 > 0:09:42achieved speeds of around 1.4 terabits per second.
0:09:42 > 0:09:47That's enough to send about 44 uncompressed high-def films
0:09:47 > 0:09:48every second.
0:09:48 > 0:09:52However, you may want to hold off on sending those movies.
0:09:52 > 0:09:55It will be some time before these speeds transfer
0:09:55 > 0:09:57to the ordinary web user.
0:09:57 > 0:10:03The passwords of 16 million e-mail users in Germany have been stolen.
0:10:03 > 0:10:07The Federal Office for Security say criminals had infected computers
0:10:07 > 0:10:10with software which allowed them to gather e-mail addresses
0:10:10 > 0:10:11and account passwords.
0:10:11 > 0:10:15The news comes days after it was revealed that almost half of all
0:10:15 > 0:10:18South Koreans have had their credit card details stolen
0:10:18 > 0:10:21and sold on to marketing firms.
0:10:21 > 0:10:25And finally, they say that TV is a window on the world,
0:10:25 > 0:10:28but now it could also be an actual window.
0:10:28 > 0:10:32The magic is courtesy of special nanoparticles
0:10:32 > 0:10:34that only reflect blue light.
0:10:34 > 0:10:36They are added to a transparent polymer
0:10:36 > 0:10:38that can be stuck onto any window.
0:10:38 > 0:10:42The whole thing is transparent until blue light is projected
0:10:42 > 0:10:45onto the glass, when you get these delightful patterns.
0:10:52 > 0:10:56We've looked at ways to hide yourself from view, but what if you
0:10:56 > 0:11:00want to do exactly the opposite and capture everything around you?
0:11:03 > 0:11:06This isn't your average game of catch.
0:11:06 > 0:11:10This is the Panono camera ball.
0:11:10 > 0:11:13When thrown up in the air, it can take stunning photographs
0:11:13 > 0:11:15that can be explored in every direction.
0:11:19 > 0:11:23The sphere is covered by 36 tiny three-megapixel cameras,
0:11:23 > 0:11:28which, once airborne, simultaneously capture individual images.
0:11:28 > 0:11:31These are then pieced together remotely in the cloud,
0:11:31 > 0:11:35using specialist imaging software, which can be temperamental
0:11:35 > 0:11:38if even one of the cameras fail.
0:11:38 > 0:11:42And this prototype does need to be plugged into a computer first.
0:11:42 > 0:11:44Now, apparently there's a technique to throwing this thing,
0:11:44 > 0:11:48which is to not spin it too much,
0:11:48 > 0:11:49to get it high enough
0:11:49 > 0:11:52and not to drop it when it comes back down!
0:11:52 > 0:11:54And this is the only one they've got. It's the prototype,
0:11:54 > 0:11:57and it's worth thousands of euros. So, no pressure...
0:11:57 > 0:12:00Here we go. One, two, three...
0:12:00 > 0:12:02CRASH, GLASS SHATTERS
0:12:02 > 0:12:04HORSE WHINNIES
0:12:05 > 0:12:09The result is one grandiose photo,
0:12:09 > 0:12:12a 108-megapixel interactive picture
0:12:12 > 0:12:16which you can view on your desktop or mobile device.
0:12:16 > 0:12:19And although you can pan left and right as usual,
0:12:19 > 0:12:23it's when you pan up, or even cooler - down -
0:12:23 > 0:12:25that the magic really happens.
0:12:26 > 0:12:29The final product will look like this,
0:12:29 > 0:12:33more stylish and a bit easier to fit in your pocket.
0:12:33 > 0:12:36The German start-up behind the device hopes the ball will be
0:12:36 > 0:12:39used in all sorts of situations.
0:12:39 > 0:12:42It's good to have a brief overview over a situation.
0:12:42 > 0:12:43So, that the wall on the one side,
0:12:43 > 0:12:45and there might have been an earthquake,
0:12:45 > 0:12:48so you want to see what's on the other side. You can throw it up in
0:12:48 > 0:12:51the air, see what's on the other side, see if there's someone
0:12:51 > 0:12:54you have to help. But it's also fun using it, just throwing it around.
0:12:54 > 0:12:57It's like a ball. I mean, it feels like a ball!
0:12:57 > 0:13:01At a price tag of nearly 600, though, it's a good thing it's not
0:13:01 > 0:13:05available until September, so you'll have plenty of time to save up.
0:13:11 > 0:13:13Now, as impressive as they may look,
0:13:13 > 0:13:18the latest generation of robots lead a pretty solitary existence.
0:13:18 > 0:13:21They all look different, they're all made by different universities
0:13:21 > 0:13:25and research departments, and they all talk different languages.
0:13:25 > 0:13:28If they really do want to have a crack at taking over the place,
0:13:28 > 0:13:31they're going to have to learn to work together, like we did.
0:13:31 > 0:13:35And the ants. Don't forget the ants. NEVER forget the ants.
0:13:35 > 0:13:39Well, Lara Lewington has been to Eindhoven in the Netherlands
0:13:39 > 0:13:43to meet the bots who are starting to learn for themselves and each other.
0:13:48 > 0:13:53Imagine a future where robots could simply access shared data
0:13:53 > 0:13:56and know how to do any task you threw at them.
0:13:56 > 0:13:59Well, after four years of research
0:13:59 > 0:14:03involving several European universities and four million euros
0:14:03 > 0:14:05of European Union investment,
0:14:05 > 0:14:09RoboEarth may show the beginnings of just that.
0:14:11 > 0:14:14What's being created here has the potential to become
0:14:14 > 0:14:16a sort of World Wide Web for robots.
0:14:16 > 0:14:18So a place that they can share knowledge,
0:14:18 > 0:14:22communicate with others, and even learn new skills.
0:14:23 > 0:14:27Here, four robots show what they could do within the care sector.
0:14:27 > 0:14:31They map the hospital room using a laser range-finder and camera,
0:14:31 > 0:14:36and upload this data to the cloud, where other robots can access it too,
0:14:36 > 0:14:40reducing the need for enormous computer power within each device.
0:14:40 > 0:14:44This helps to build on learned knowledge, and in this instance,
0:14:44 > 0:14:47pick up some crisps before passing them on.
0:14:47 > 0:14:50Well, Arm managed to pick up the crisps OK
0:14:50 > 0:14:53and transfer them to this robot, called Pico.
0:14:53 > 0:14:56The only problem is that although the mapping technology is in place,
0:14:56 > 0:14:58that they know where they're going,
0:14:58 > 0:15:00the actual crisps haven't gone anywhere.
0:15:00 > 0:15:03They stayed on this tray and they never made it over there
0:15:03 > 0:15:07to the person in bed. It did also take quite a long time.
0:15:08 > 0:15:12Admittedly, simple tasks may appear challenging,
0:15:12 > 0:15:16but this is a concept, and one in its infancy.
0:15:16 > 0:15:19It's harder to teach robots than you might imagine.
0:15:19 > 0:15:20They lack common sense,
0:15:20 > 0:15:24and have to translate their knowledge of what to do into physical actions.
0:15:24 > 0:15:29The aim is affordable yet multi-skilled creatures,
0:15:29 > 0:15:32so you choose a robot a bit like deciding which telly to buy,
0:15:32 > 0:15:34based on your own personal preferences.
0:15:34 > 0:15:37If serving breakfast is your priority,
0:15:37 > 0:15:40your bot will probably need arms and to get about the place,
0:15:40 > 0:15:44but if you simply want it to polish your shoes and mow the lawn,
0:15:44 > 0:15:46it might not need much height, or arms.
0:15:47 > 0:15:50A mix of the eight necessary programming languages
0:15:50 > 0:15:52will exist in the database
0:15:52 > 0:15:55with a combination of human and machine-learned input
0:15:55 > 0:15:59to extend their talents to, well, pretty much anything.
0:15:59 > 0:16:05Robots can help us in daily things we do in our households.
0:16:05 > 0:16:07And especially for elderly people.
0:16:07 > 0:16:10We think that it is useful to have robots in the future which
0:16:10 > 0:16:14can help with getting things for us, getting a cup of tea,
0:16:14 > 0:16:21or help us with changing clothing or help us to stand up if we lie down.
0:16:21 > 0:16:25So in normal households, we see that those service robotics
0:16:25 > 0:16:29will take an important place in, say, a decade from now.
0:16:29 > 0:16:33Yet the robotic form does take a bit of getting used to.
0:16:33 > 0:16:36The robots don't actually look that friendly.
0:16:36 > 0:16:39And when they turn round - probably going to do it any minute now -
0:16:39 > 0:16:41when that turns round and looks at you like that,
0:16:41 > 0:16:43it feels quite menacing.
0:16:43 > 0:16:47It feels rather odd that you're being watched, and really quite aggressive.
0:16:47 > 0:16:50Well, at least they do come in all shapes and sizes.
0:16:50 > 0:16:53This is not a robot which is going to help you in the household.
0:16:53 > 0:16:56This is not going to bring you drinks.
0:16:56 > 0:17:00But this robot is a platform where people can develop software.
0:17:00 > 0:17:04This robot is typically intended to become a robot as a friend.
0:17:05 > 0:17:09But before you worry about them taking over the planet, fear not.
0:17:09 > 0:17:10They do have an off switch.
0:17:10 > 0:17:13I don't know how to stop it!
0:17:13 > 0:17:15Oh. When it works.
0:17:18 > 0:17:23Lara Lewington. Now, earlier, we looked at some novel ways
0:17:23 > 0:17:25to keep your photographs off the web.
0:17:25 > 0:17:28But of course, many of us don't mind our images
0:17:28 > 0:17:34and details from being spread on social networks, within reason.
0:17:34 > 0:17:37We do, of course, want to know where and when they will be used.
0:17:37 > 0:17:39And that's where Kate Russell comes in.
0:17:39 > 0:17:44She has some tools now to manage your online reputation in Webscape.
0:17:47 > 0:17:52What goes online stays online, and when friends can post tagged
0:17:52 > 0:17:56photographs and comments about you on social media networks,
0:17:56 > 0:17:59it's not just the paparazzi you have to worry about.
0:18:01 > 0:18:04Persona is a reputation management tool that
0:18:04 > 0:18:08protects you by monitoring Twitter, Facebook and Google+ accounts
0:18:08 > 0:18:11for any potentially offensive material.
0:18:11 > 0:18:15Around half of all recruiters admit to having checked applicants out
0:18:15 > 0:18:17online before making a hiring decision,
0:18:17 > 0:18:19and if you're in the dating game,
0:18:19 > 0:18:22you can expect around a third of the people you go out with
0:18:22 > 0:18:26to have snooped around on your social media profile.
0:18:26 > 0:18:28# And I don't give a damn 'bout my bad reputation... #
0:18:29 > 0:18:34Persona scans for content by keyword, keeping an eye out for profanity,
0:18:34 > 0:18:39adult content and references to violence or drug and alcohol abuse.
0:18:39 > 0:18:43The free account monitors ongoing activity with real-time alerts
0:18:43 > 0:18:47via SMS or e-mail, and additional features if you upgrade to paid.
0:18:51 > 0:18:58Big data impact, feeding nine billion people, ageing national populations.
0:18:58 > 0:19:01These are all 21st-century problems,
0:19:01 > 0:19:04and just a few of the topics being tackled at the moment
0:19:04 > 0:19:09in a series of talks hosted by the UK's Royal Geographical Society.
0:19:10 > 0:19:15Founded in 1830, the Royal Geographical Society
0:19:15 > 0:19:19is considered a world leader in advancing our understanding
0:19:19 > 0:19:23of geography and supporting its practitioners across the world.
0:19:23 > 0:19:27The charity makes a lot of fantastic educational content
0:19:27 > 0:19:30which is free for everyone online.
0:19:30 > 0:19:33There are a couple of other little gems from the society
0:19:33 > 0:19:35I'd like to show you too.
0:19:37 > 0:19:40Discovering Britain is a charming site
0:19:40 > 0:19:45and all the walks it describes are downloadable as text or audio guides.
0:19:45 > 0:19:48So if you're heading out into the great British countryside
0:19:48 > 0:19:52any time soon, why not take one with you to experience the very best
0:19:52 > 0:19:55of these rolling green vistas?
0:19:55 > 0:19:58# ..in an English country garden... #
0:20:02 > 0:20:05And the third site from the Geographical Society.
0:20:05 > 0:20:08If you've ever gazed out of an aeroplane window wondering what's
0:20:08 > 0:20:12passing by, thousands of metres below, and wanted to know more,
0:20:12 > 0:20:15Hidden Journeys is full of interactive flight paths that
0:20:15 > 0:20:19let you explore some of the world's most interesting aerial routes.
0:20:24 > 0:20:27It's not something I expected to ever say,
0:20:27 > 0:20:32but this unit and currency converter app is awesome!
0:20:32 > 0:20:34It's not free, but Vert on iOS
0:20:34 > 0:20:38is far more than just a weights and measures tool.
0:20:38 > 0:20:42It has over 800 conversion units in 33 categories
0:20:42 > 0:20:48including data transfer speeds, cooking measurements, viscosity,
0:20:48 > 0:20:53and essential clothing sizes such as bra, hat and shoe.
0:20:53 > 0:20:56There is even a typographic section to convert pixels
0:20:56 > 0:21:00into millimetres, and somewhat randomly,
0:21:00 > 0:21:03the rating certificates for rock climbing around the world.
0:21:03 > 0:21:06You can literally convert anything.
0:21:06 > 0:21:09OK, there are some things that aren't covered,
0:21:09 > 0:21:13such as how many cats it takes to learn the Spanish language.
0:21:15 > 0:21:20Luckily, Cat Academy on iOS does know that.
0:21:20 > 0:21:21No me gusta.
0:21:21 > 0:21:25It's a serious language learning platform that got a lot of attention
0:21:25 > 0:21:29when it launched recently and is still one of my favourites.
0:21:29 > 0:21:30Que pasa?
0:21:30 > 0:21:33It uses humour and learning science
0:21:33 > 0:21:38combined with the greatest Internet meme of all time - cat pictures! -
0:21:38 > 0:21:41to help users learn conversational Spanish.
0:21:41 > 0:21:43Tengo hambre.
0:21:43 > 0:21:45According to the developers,
0:21:45 > 0:21:48users learn three times faster than with comparable tools.
0:21:48 > 0:21:52Sounds pretty purr-fect to me.
0:21:53 > 0:21:55Por favor.
0:21:58 > 0:22:01# It's a god-awful small affair... #
0:22:01 > 0:22:06This week, NASA celebrated a very special anniversary.
0:22:06 > 0:22:10Ten years ago, on 24th January, Mars Rover Opportunity
0:22:10 > 0:22:13touched down on the Red Planet.
0:22:13 > 0:22:17And despite the initial mission being planned for just 92 Earth days,
0:22:17 > 0:22:20the plucky little robot is still going strong,
0:22:20 > 0:22:24trundling around the surface of Mars collecting scientific data
0:22:24 > 0:22:27and taking photographs to send back to Earth.
0:22:27 > 0:22:30You can find out more about all of the Mars Rover projects
0:22:30 > 0:22:33and the amazing information they're collecting
0:22:33 > 0:22:35on the official NASA website.
0:22:36 > 0:22:43# ..is there life on Mars? #
0:22:44 > 0:22:46This is my bedtime routine.
0:22:48 > 0:22:51We finish this week with an incredible video from
0:22:51 > 0:22:55Vine magician Zach King, who also posts on his YouTube channel,
0:22:55 > 0:22:57for those who don't use the Vine app.
0:22:57 > 0:23:02It's mind-boggling what this guy can do in a six-second clip.
0:23:02 > 0:23:04When you lock your keys in your car...
0:23:13 > 0:23:14Aww!
0:23:22 > 0:23:25Cooking ping-pong balls for breakfast.
0:23:25 > 0:23:27Mmm! Yummy!
0:23:27 > 0:23:28Kate Russell.
0:23:28 > 0:23:31And those links are available at our website as usual.
0:23:31 > 0:23:34bbc.co.uk/click the address you need.
0:23:34 > 0:23:37If you'd like to comment on anything that you've seen today -
0:23:37 > 0:23:40some pretty controversial topics in this week's programme, I know -
0:23:40 > 0:23:42click@bbc.co.uk is our e-mail address.
0:23:42 > 0:23:46We're also on Twitter, Google+ and Facebook too. That's it for now.
0:23:46 > 0:23:49Thank you very much for watching and we'll see you next time.