In the territory. And now on the bbc news channel, this weeks episode of click which investigates whether technology in fashion can help to make the industry more sustainable and environmentally friendly. This week, how to hide in hong kong. A new bunch of apples. And dyeing to save the planet . Try green fashion. Other colours are available. For the last four months, protesters have been rallying in hong kong. First against a proposed bill that would have allowed the extradition of hong kong residents to the chinese mainland to face criminal trials. That bill has now been withdrawn, but protesters remain on the streets, asking for more demands to be met, including greater democratic freedoms and an inquiry into alleged police brutality. The protests have been watched around the world, with the videos uploaded daily showing highly organised groups. In the airport, on roads, and even in the legislature. But with no clearly structured leadership. This contrasts with the so called umbrella revolution of 2014, a Pro Democracy Movement where individual organisers were targeted and jailed. This time, people are using encrypted messaging apps to organise in a more anonymous way and try to avoid interception by the police. China is a world leader in facial recognition, surveillance and Artificial Intelligence technology. So its not unthinkable that theyve found workarounds to keep an eye on the apps. Danny vincent is in hong kong and he met two protesters who are trying to organise without being identified. A smart lamppost being kicked to the ground and opened up by protesters. Hong kong Authorities Say they are used for monitoring the weather, pollution and traffic. But protesters say they could have a more sinister purpose housing a facial recognition camera for monitoring and identifying people taking part in the protests. They sawed it down to see what was inside. They claimed to find computer chips made by a Mainland Company linked to surveillance. I think the guys in the front line that took down that surveillance camera, they understand it might be a Surveillance System that is monitoring its people. They actually might not know the entire Technology Behind it. Lasers are another way protesters are using relatively low Tech Solutions to disrupt the surveillance of the police en masse. The laser pens are used because if you point it directly at a camera it will make the sensor of the camera a little bit unstable. It might buy time for us, it might disrupt the police from chasing us. Hong kong has seen months of protests. These protests have not been organised by individuals. They have been organised by tens of thousands of people online and tens of thousands of people have also taken to the streets. Much of the organisation has been done using online forums and encrypted messenger apps like telegram. This it professional and protester asked us to call him tony. He is a member of several groups planning protests over Telegram Group chats. Some of these groups have tens of thousands of members. The last time hong kong has had such la rge scale protests was during the occupy Central Movement or the umbrella revolution. That movement had a leader. The government has targeted that organisation afterwards. So this time around, people see that its safer to participate in this Movement Without identifying themselves. Without telegram, i cant imagine our masses would have co ordinated effectively, feeling secure that the police could not implicate us or prosecute us. Some go to even further levels to protect their digital footprints. Meet alex. The phone i use isjust a normal Android Phone from samsung that has got military security. It works as a secondary android. It is behind the primary android system. Its two separate systems. Theres a lot of passwords you have to input in order to get into that secondary android. It is military grade protection. Its very difficult for the police to trace me digitally. He suspects the authorities are also becoming increasingly tech savvy. Many have long suspected a loophole in the popular messenger app, which could allow the government to monitor communication we suspect the government has been importing all the hong kong phone numbers into telegram, or the Police Force Telegram account, to help them pinpoint which person is involved in that kind of speech or involved in that conflict. Telegram claims it has now fixed this loophole but fixed or not, protesters are developing other methods of communication. These include using airdrop on iphones and the bridgefy app. Both work via bluetooth. Bridgfy uses peer to peer mesh networking and doesnt need the internet to work. Still, these apps may not be completely surveillance free. Sometimes face to face communication is the only means available. If the internet is not good and its not feasible for us to grab our phone, it is better to do it in the field. This movement has also become an information war between the protesters and police. Protester scouts take photos of police locations and spread the information online. After more than 15 weeks of protests, this movement shows little sign of slowing down. Hello, and welcome to the week in tech. It was the week that alibaba founderjack ma retired. He leaves the retail giant chinas richest man, worth a reported 38. 5 billion. Google was hit by a new anti trust probe following concerns over its grip on the Online Advertising market. And apple unveiled its new iphone, which is giving some fans the creeps. More from the launch event in a bit. It was also the week the longest ever road trip by an electric car was completed. Suvs from the shanghai carmaker aiways travelled over 15,000 kilometres from china to germany, a journey which lasted for 53 days, called for 77 recharging stops, and resulted in a Guinness World record. I hope they had adequate toilet breaks. And sticking with motors, one day you may be able to redecorate your own in a jiffy. Thanks to a new colour changing ink from mit, nicknamed photochromeleon after shade shifting chameleons, this futuristic dye reacts to different lights to produce various hues. And finally, here is a bright idea for a new breed of bot. The 0scibot is powered and steered by light, thanks to a gel which bends towards and oscillates around sources of illumination. The Energy Efficient contraption could one day allow seafaring vessels to travel long distances without any fuel. Fingers crossed this flip is not a flop. And so to the stevejobs theatre in cupertino, california, for the apple launch event, where as expected the iphone 11 range was announced. These come with multiple cameras. The 11 pro and pro max have three, which sees them catching up with android rivals. What else . Better batteries, a slightly bigger ipad, a bit of an upgrade for the watch, and the pricing for apples new Tv Streaming Service was unveiled, cheaper than netflix at 4. 99 per month thats in dollars or pounds, though many would argue it needs to be cheaper given the comparative lack of content. The event was titled by innovation 0nly, but overall there was little to quiet the rumblings over apples lack of exactly that recently. Unless you count slow mo selfies as the groundbreaking feature the world has been waiting for. Dave lee was there for us. First question, most important, slow mo selfies why . Good question, spence. I think the question for many is why not . For People Like Us with short hair it might not be so good to do a slow, glamorous selfie. But i think there will be the influencers out there who will be very excited by the prospect of having a slow mo selfie just for that added glamour on instagram. And certainly it doesnt feel like apple is leading the charge these days. I mean, thereve been several iphone launches recently where weve said, you know, theyre still playing catch up with Companies Like huawei and samsung. I think thats true, but i think that is perhaps how apple has been for some time. It has never really been too much of a problem for them, apart from the initial iphone, which changed everything, everything since then has been kind of iterative. The problem will be that if youre a sort of person who, like most normal people, wants to purchase a phone that lasts three orfour years, the new iphones do not have 5g. Many people will look at that and think, im going to have 5g. Even if i dont have it today, i might have it in a year or two. This phone doesnt have 5g. London fashion week has kicked off with all its usual glitz and glamour, and as the biggest designers take centre stage to showcase their latest creations and set this years trends, protesters from Extinction Rebellion gathered outside to remind the world about the true cost of fast fashion. 80 billion pieces of clothing are produced every year. And many of those are discarded not long after they have been bought. The true cost of fast fashion is now becoming apparent. The industry is one of the largest polluters in the world, right up there with oil and agriculture. And cotton production is a big part of its Carbon Footprint. Almost half of all clothing contains cotton. Well, Lara Lewington has been to sweden to see a facility which is hoping to refashion our cotton garments several times over. From the cotton fields to the clothes rail, it takes 20,000 litres of water to makejust one kilogram of cotton. And to put that into context, that is enough for a t shirt and a pairofjeans. And that is why what is going on here is so important. At this swedish recycling mill, a fifth of that water is needed to create a comparable amount of fabric. The place runs on wind and water power, converting cotton into viscose in a process classed as climate positive. These bales are stuffed full of denim, in this case leg panels from pairs of jeans. So although this facility could separate any metal fastening or even any stitching which is made out of something that isnt cotton, here this batch has arrived all sorted already. But here, an eco friendly chemical process is followed by de dyeing the fabric. Any remaining colour is then removed through chlorine free bleaching. Water then transports this pulp into the next stage, where it will be dried for transportation. Resulting in quite literally a blank canvas to be sold on to Clothing Companies. And this is the end result. A sheet of what is known as circulose, a type of dissolving pulp. That gets sold on and turned into thread which feels a bit like cotton wool, and from there of course it is used to make clothing. Feels pretty nice. That is now made out of viscose and it is recyclable again, about five or six times. This was in fact a proof of concept seen on the catwalk a few years back. This was in 2014. Four years down the line, this facility was ready to be opened. We can produce 7000 tons per year, annually, of this dissolving pulp, and that equals the weight of 30 million t shirts. We are the First Company which is doing this on an industrial scale. We are notjust producing kilos, we are producing tons of this, and that is very, very important for the industry, to realise that this can be done on a real scale, and make a real difference. Because if you just talk about kilos, nobody can make a change with a few kilos, but you can make a change with thousands of tons of material, and you can show the world that it is actually working. Raw materials being sorted is just one piece of the puzzle, though. This denim had to be shipped from the us, although with scale, more facilities could open worldwide, reducing the Carbon Footprint of that element. And how about the labour afterwards . That is not in renewcells remit, but it is of course part of the bigger picture. In the meantime, high street retailer h m, one investor in the company, will soon have clothing originating from this process on their shop floors. But the big dream here is that by 2030 the clothing industry might use 100 recycled or sustainably sourced materials. And while that may sound unachievable now, clearly times and attitudes are changing. That was lara in sweden. So recycling Raw Materials will undoubtedly be part of a greener future for the fashion industry. But in the meantime, how about this . It looks and feels like a thin cotton t shirt, but this is actually made from algae and wood pulp. The print is 100 algae, and the material is made of lyocell from trees and linen from plants. Pretty comfortable, i have to say. The care instructions are a little bit fiddly basically keep it cold and dont iron the algae. But the most interesting thing is, when you have finished with it and you want to get rid of it, you can bury it in the garden and it will be gone within three months. But something that is even more harmful to the environment than growing cotton is dying textiles. Half a trillion gallons of fresh water are used in textile dying each year. The untreated wastewater from the dye is often discharged into rivers, leaving entire communities with no access to clean water, killing aquatic life, and eventually reaching the sea. And get this it can take about 150 litres of water to dye just 1 kilogram of cotton. Well, lj rich has visited a lab in london which is only using 200 millilitres of water to dye a 1 kilogram piece of silk. So whats the secret . This lab houses a fashion scientist who uses petri dishes to make colouring clothing more environmentally friendly. This could be the future of fashion and it smells like beetroot. These beautiful designs were created by bacterial activity, no chemicals required. So how did you come across using bacteria to dye clothing . So when i was studying material futures at saint martins, i met professorjohn ward here at ucl, and he introduced me to a bacterium called streptomyces coelicolor. Depending on how it is grown, where its grown, the ph of that environment, we can produce Something Like a navy blue, a bright pink, and so we use all of these conditions as a design toolkit to influence our patterns and outcomes on the textile. The bacterium ferments in a small amount of sugar solution, which produces pigment directly onto fabric as the colony of microorganisms grow. Like a brewery with yeast, natsai engineers the growing conditions to produce different varieties of colour. I am really interested in how technology is changing how we design and fabricate our environments, and especially in the context of Climate Change and our the source of our resources and the impact they have on the environment. So the imperative for us right now is to try and find ways to change the way in which we process and manufacture textiles, reduce water use, do away with the need for chemicals at the beginning, at the end of the stage. The process is simple enough that even i could get a start on creating my own microscopic civilisation. So satisfying she laughs. Ok, thats you. Wow there you go, my first, what would this be, a kind of culture . It is a cell culture. We are going to ferment this now for approximately seven days. Right. And we should, at the end of it, have something that looks a little bit more like this. It is a slow and thoughtful process. It takes a week for the bacteria to transform plain fabric into a kaleidoscope of colours, and it works on a small scale. I think the challenges are to then take it from a lab scale, and then develop that into really la rge scale processes that both work efficiently, but also at the right kind of cost. As well as these unique organic patterns, the technique could also block dye fabric a uniform colour. But could these tiny microorganisms make a big enough impact on an industrial level . I am all for it, the Innovative Element that we are exploring, i think it is vital, it is crucial, but it has to happen in parallel with behavioural change. Should we be consuming as much as we are consuming . Perhaps not. I think for us it is a two pronged approach. And this might help the fashion industry start to get a bit more down to earth. Brilliant, that was lj. Meanwhile, i am visiting London College of fashion to see a very strange catwalk. I am looking at three identical ladies, each one is sporting a different piece of streetwear. And it really feels like they are in the room with me. I am wearing the magic leap mixed reality goggles, which overlay computer images onto the real world. The college wanted to explore how we might one day use mixed reality to enhance our Online Shopping experiences, and this app was the result. This really is so much better than looking at photos of clothing on a website. You really get a sense for how the material hangs and the quality of the fabric. Return rates for Online Shopping are over 60 , so the possibility of trying clothes on virtually before you physically have to do that will make a huge difference to consumer experience. This could certainly be a better way for shopping for clothes online of course, what would be good is if it wasnt an avatar of martina here wearing the clothes, but an avatar of me. Which is why i find myself wearing my brightest and tightest clothes, while my curves are being scanned by a phone. Capturing 3d content for fashion in the past was either incredibly difficult, with hours spent in front of a computer 3d modelling, or very expensive using vast camera arrays. What we are beginning to get towards is the possibility of capturing photorealistic avatars through a smartphone. You do still have to stand absolutely still for several minutes all the time remembering what my mum used to say, blue and green should never be seen. And there is several hours of processing online, but finally, here i am the same method is also used to capture clothing items. The idea is that Clothing Companies will scan all their garments in all different sizes, which you can then pop onto your digital double. The team here think this application will go far beyond Online Shopping. They are looking to a time when we will all have a presence in the digital world, and will want our avatars to meet each other looking their best. And not only might there be a market for these completely virtual outfits, one day we might also be able to augment our actual clothes back in the real world. We truly believe in what is called the ar cloud, is a digital layer across the real world, where there will be different experiences that you can begin to have, and one of those will be fashion. There will be digital clothing, and certainly from smartphones, we are able to have depth sensors, track the body to a much more accurate level, the possibility that we can overlay digital garments on to what we are currently wearing is absolutely realistic and we believe it will happen. And those who would like to see me in the hoodie next weeks programme, vote now youtube, facebook, instagram and twitter. Its not going to happen. Thats it for now, thanks for watching and we will see you soon. We are moving into a very settled spell of weather looking at the week ahead, a big area of High Pressure extending in from the atlantic will mean a lot of dry weather, light winds and autumn sunshine but beware, a few chilly starts in the forecast as well. This is the area of High Pressure, but currently a weather front sitting across the uk cutting us in two. Still also a low Pressure Centre to the north pulling away towards scandinavia and through the afternoon the winds will ease back considerably across northern scotland and there will be some sunshine here. The weather front sinks from the south taking rain across Northern Ireland and Northern England by the end of the afternoon perhaps fringing north wales and the north midlands. That front is a dividing line between warm air are hanging on to the south of the uk, highs of up to 25 this afternoon, and chilly conditions coming from the north, highs of between 13 and 15. The front continues to sink south through the evening and overnight, rain for wales, the midlands and east anglia, probably more cloud and not so much rain as the front slides into southern england first thing on monday. Warm to the south overnight, lows of 14 or 15, further north clearer skies and lighter winds we could see lows of three or four across parts of rural scotland. Then into the early part of the new week, the high begins to build, a lot of fine weather as promised but around the northern flank of the high we start to pull in air, basically from the arctic so gone the warm amber, into yellow and some of us are blue, a crisp autumn feel and it will be quite pleasant weather in the sunshine but quite a bit of cloud at the tail end to the south on monday, maybe some rain and a bit more cloud for scotland and showers as well. Gone are the temperatures in the mid 20s, 19 or 20 to the south, 13 or 14 more typical further north. The high gets established overnight into tuesday, light winds and clear skies, temperatures down in single figures even to the south of the uk. A lot of sunshine on tuesday, quite cool in the north westerly wind to the north and pulling in a little more cloud through the day, cloud also getting into Northern Ireland. Temperatures again from the mid to high teens quite typically