where jessica crichton wherejessica crichton is there. it isa wherejessica crichton is there. it is a bit like a super saturday. all eyes a re is a bit like a super saturday. all eyes are on one man in particular. exactly, one man in particular, that manage usain bolt. the fans have beenin manage usain bolt. the fans have been in for a treat here. a packed morning session, they have been into the jamaican spent. one of the greatest athletes to ever run track and field, usain bolt. he looked reasonably comfortable in the relay, he anchored the final leg for jamaica. they ran out of time on 37.95 seconds. after reaching the final here at the london stadium, here's what usain bolt had the same. it was brilliant. it is a great team, these guys are young, the crowd is wonderful and it out and needed but they had to do qualify. but like any added nurse? mazive no, i enjoy relays more than anything. but like any added nurse? mazive no, i enjoy relays more than anythingli can i enjoy relays more than anything.” ca n safely i enjoy relays more than anything.” can safely report that the british then got the batting round safely, then got the batting round safely, thenit then got the batting round safely, then it has been an issue for them

in the past. only once any past four will chat users have the managed to negotiate about on tv. they came second in the heat in the season pass back best time. more successfully women as well, they are also through to the final. they came second in their heat. behind the usa. they have had a lot of success in this competition, a medal at the last four championships, the greater the final with high hopes. the british and luckily had a very fast heat, so they will go to as the fastest losers. they got a world bronze here in 2015, and b after the race that they are hoping to reach the podium this time around as well. any women parred relay, they looked very strong indeed. finished second behind a dominant usa side. this team, great britain and had a lot of success , team, great britain and had a lot of success, reached the podium in the last three world championships. on the whole, a very successful day on attractive, but that does not stop

there because we have katarina johnson thomson going into the final of the individual highjump johnson thomson going into the final of the individual high jump and also one of the greatest british athletes of all time, mo farah will be on the track today for a double gold, we have already seen a 10,000 metres. he takes to the track for the 5000 metres and is going an 11th state global gold medal. that is quite incredible. lots for british fans to cheer about. we will all be watching. after arsenal's filling win over leicester in the opening match of the new premier league season, there are seven matches today, liverpool begin their campaign witha today, liverpool begin their campaign with a lunchtime visit watford. champions chelsea i home to bu rley watford. champions chelsea i home to burley and two of the newly promoted sides are in action. write about the big spending manchester city, while huddersfield who were last in the top flight in 1972 travel to crystal palace. there are five games in the scottish premiership this afternoon, all those matches kicking off at 3pm. and of course you can keep

up—to—date with all the latest from the world that its championships online and on bbc two this afternoon, but here on bbc news it is time for click. this week: unexpected item in the bagging area. eventually vr a good kicking. —— giving the are a good kicking. and, going up? err, sideways. this month marks the 25th anniversary of the self checkout. the first one was installed in new york on august 5th, 1992, in a price chopper. so, what does its inventor, doctor howard schneider,

remember of it all? i hadn't gone shopping much, so i went to the supermarket near my house with a stopwatch, and i started looking at people checking out, and my stopwatch went "click, click" — it was a mechanical one. and, you know, i said well, what a great environment. this is so messy. good luck with any machine doing it... and i said, this would be a great problem to solve. and then i started building a machine in my garage. i actually spent every cent i had on parts and i got the first machines built. see, i love self—service checkouts, but then i'm a control freak, but i do believe they save you time. until they go wrong, at which point they become a right pain in the bagging area. the technology in the machines now is less than it was 25 years ago, using 286 computers, using ms—dos, 3.3... i had better technology 25 years ago then what you see now. which is the reason for a lot of frustration. please wait for assistance.

unexpected item in the bagging area. please remove item before continuing. so now people are thinking outside of the shopping basket to try and update the self checkout and reduce the delays further. in japan, reggie robo takes your basket and bags you're shopping for you. the system, which was trialled at the beginning of the year, scans that rfid tags on all of the items at the same time. since december, the amazon go shop has been undergoing testing in seattle. once it is working, shoppers should be able to pick up their items and simply walk out of the store. swedish cafe company, wheelys, is working on a similar idea. although this staff must shop will even come to you... here at canary wharf in london, something less spectacular but, which seems to me, more workable and more scalable. grab and go has been invented by ba rclayca rd. the apps scans bar codes as you grab

items off—the—shelf, and then you just go! payment is taken from the card that is linked to the app, and the receipt is sent to the phone, so you don't have to wait in a checkout queue at all. but, with all that grabbing and going, are you thinking what i'm thinking? in the future, if you're scanning things and putting it in your bag, and then just walking out, and all the doors are open... i can see more people stealing more stuff. so you can basically very easily pick up an item and then walk out, but the way you have cctv, you have a man on the ground basically monitoring all of that. it works in exactly the same way. so it's no more secure than a self scan checkout, but i do wonder how many people would just "accidentally miss" that bar code, and leave with a lot of unpaid staff... although, even here, technology might be able to spot them. supermarket giant walmart has filed a patent to incorporate facial recognition, blood pressure

and heart rate monitoring into its stores to try and understand customer frustration at checkouts. it might improve customer service, but previous trials of the tech have been used to try to spot shoplifters, raising a fuse security concerns along the way. in fact, only this week, the supermarket announced it is also trialling a scan and go solution, but this one relies on shop assistant approval before you can leave. in china, home to several unmanned stores like this one, you need your face to get in the front door in the first place. like barclaycard's grab and go, customers scan items using their phones and they can even heat up their grub in the microwave inside. speaking of heating things up, a similar chinese idea, bingo box, ran into problems when one of its glass clad stores began to overheat. as it was unmanned, it wasn't until customers began to complain that the sweltering temperatures

were ruining the food inside that the shop was shut down. it is now back up and running, and everything is cool... so, it's not all plain sailing for these souped up shops, and it will be a while before we buy our weekly groceries in store without some form of human interaction, or intervention. but, as our patience wears increasingly thin in this age of grabbing and going, it's no surprise that bingo box plans to open 5000 more stores in the coming year. premier league football starts again this weekend, which i'm reliably informed is important to some people. seriously, though, fans will be excited to see what their clubs new signings have to offer. but, how do you know if a new player is going to be right for your team? well, one company is using virtual reality to identify talent and also help players

to recoverfrom injuries. here is carol hawkins. i'm in manchester, home of great football, to check out a small start—up that isjoining up with premier league clubs for an idea that's only eight months in the making. ifeel like i'm doing pretty good! this vr system helps scouts recruit players by using statistics from virtual gameplay to decide whether or not the player would work for a team. but separately it is being used to help injured players get back to full fitness. mentally and physically. you have injured players who will often spend anything from six months to ten months, years out of the game. and the scientists, the physios will work with them, but we do not know what they are going to do in a situation, what decisions they are going to make. now, they can play games, as well as having the treatment, the movement is limited but they can feel part of the squad. they are using an htc5 headset,

with the usual hand controllers attached to shin pads. the kit is wireless, crucial for football drills. as well as this vision, they are also working on one for goalies, which will require an extra pair of sensors. several premier league clubs are signing up to use the vr system as it promises to bring players back from the bench faster. the first question they ask — does it feel like a real ball? you do feel like you are really hitting the ball, it is quite strange. i don't know if it is the sound, or the visuals, but it is very immersive, and i know people always use that word for vr, but it does feel as though you are hitting it... but, of course you are not. and because you are not, it's important players don't try too hard and injure themselves even more, especially when they have cost clubs millions of pounds. we had an injured player last

week who is not allowed to kick a physical ball. he's fit, he could probably run a marathon, but the injury means he cannot do it. he got in this and it was basically a case of, ifeel like i am kicking a ball. psychologically, it is massive. i am now in the rehab drill and there is a man to my left who is tracing a s with his foot. now, i cannot do that, because my balance on these prosthetics just is not there, sorry, physios! but i can see how that would be very useful for injured players, but not just injured players, in hospitals. players will complete a set of exercises and drills which will be scored, and their fitness can then bejudged by coaches. elsewhere in the sport world, american football is embracing vr quickly. strivr there is a company out of stanford university, currently working with seven nfl teams to allow players to practice any time, anywhere, without the same physical tolls. and in the netherlands,

another vr company, beyond sports, has a contract with both arsenal and stoke city for match analysis and vr training. but back in the uk, a man who won premier league titles as a player and a coach with manchester united thinks the new technology could really help. i think it benefits both amateur, professional and grassroots. you can put pressure into this situation. the technology is part of sport now. football, possibly, have had a reluctance to use it, but it is moving in that direction. but the kit being offered is not cheap. with packages starting at £5,000 and increasing to more than £20,000 a month. but the potential benefits of vr to the football clubs that can afford it are intriguing, coaches want to train and test football is in the most effective way by recreating the pressure and intensity of performing in a packed stadium. so, what would the manager

with the most premier league titles under his belt, sir alex ferguson, think about it? he would have a look at it, yeah. i think he would. he was open to all that sort of stuff. as long as it made a bit of a difference, or sometimes it is what people like, you know, players like it. they like something new and fresh. top clubs are big businesses, and the money in football is only going to increase. and, as it does, teams will be looking for any way to improve. as you watch your team this weekend, remember that last—minute win or fingertip save might be the result of some hard hours spent in a virtual world... hello, and welcome to the week in tech. it was the week that the us military announced it might shoot down civilian drones if they fly in a american bases. and, the telephone numbers

and e—mail addresses of game of thrones stars were leaked by hackers demanding a ransom from tv network hbo. faceapp has pulled a new feature labelled as "racist", which allowed users to edit selfies into caucasian, asian, indian, or black. and social networking behemoth facebook is taking on tv and youtube by revamping its video offering. labelled "watch", it would feature specially commissioned shows, as well as cat videos and clips of people falling over. and disney is going to pull its content from netflix, after the house of mouse announced that in 2019 it's launching a rival video streaming service, dedicated to family friendly disney fare. don't you worry, pal. you had a good run! there's no word yet whether the service will show any marvel or lucas film content — like star wars, which did disney also owns. and finally, the man who made passwords a massive pain now says much of what i did,

i now regret. bill burr created the us national institute of standards and technology's guidelines, including things like changing your password every three months and using complicated character combinations. he now thinks this is a waste of time, as people still pick rubbish passwords which hackers can break. they are just harder for us to actually remember. weather, particularly in britain, can be changeable at the best of times. for all the dramatic change to come over the next 2a hours, i should know, having spent a decade as a weather presenter beforejoining click, it's notjust about knowing the forecast, you also need to be prepared whatever the weather. and, if you are not that organised, luckily i found a couple of devices that should be able to help...

sunflower, open. this prototype autonomous sunshade can be voice controlled, or use artificial intelligence to know what to do, when. ok, the main function here is probably pretty obvious, and that is to protect you from the sun. this device aims to be a little bit more clever than that. as the sun moves throughout the day, the top of the umbrella will also move. the panels on it will be harvesting solar power and also making sure that you get maximum protection wherever the sun is. so some of the other functions in here? well, there is a camera and a microphone providing security when you are out. there's also the ability to be able to play music i ask it now, through voice recognition i should be able to do that. sunflower, play classical. classical music plays. by launch later this year,

it is expected to be able to fully connected to the smart home, as well as virtual assistants amazon eco or google home. all very well — if a price tag of up to £3000 does not bother you... sorry, hang on, ijust need to charge my phone... and for those moments the sun isn't shining, well, you wouldn't want your washing getting wet, would you? so, how about a smart clothes peg? peggy is still at prototype stage, but the finished product aims to be able to track ultra localised weather using these sensors within the device, as well as pulling data from online forecasts so you know whether you should be putting your washing out or not. handy, if it works. but for keeping yourself dry, well, a few smart umbrellas, in all shapes and sizes, have emerged in the last few years. as much as this umbrella may look

difficult to miss, it is, of course, quite easy to leave your umbrella at home when it's going to rain, or just to leave it anywhere, but this connects to your mobile phone so it should stop you from being able to lose it. if you move too far away you will receive an alert and if you wake up in the morning and the internet says it is going to rain? well, you will get a reminder on your phone to make sure that you take it out with you. the problem was, i did seem to get more alerts than were actually required. if you are taking a trip to the beach this summer, then hopefully your issue won't be rain, but it could be thirst. so, if you've been waiting for a drink delivery service to bring cold drinks to your sun lounger, then you are in luck. well, at this estonian resort, anyway. the cleveron drone aims to safely drop—off drink orders from two meters above. i'm not sure i would opt

for something fizzy... the company claims this is the fastest response time ever for commercial drone delivery. so whatever the weather has in store for you this summer, you now know how much better prepared you could be in the future. i seem to be living in a time when all of the tech from my favourite childhood sci—fi films is coming true. we kind of have back to the future hover boards, we do have jet packs from the james bond films, and robot vacuum cleaners from the jetsons. and kate russell has been to stuttgart in germany to uncover the latest storybook tech turned real. the picturesque town of rottweil, germany. home to fearsome dogs... chocolate box buildings...

and a 246 metre tower housing the tallest observation deck in germany. that this tower isn't just about great views. built by elevator company thyssenkrupp, it has 12 lift shafts running inside of it. one is used to transport passengers to the top. the others to the latest in elevator technology. as buildings get taller, life gets more complicated for elevator engineers. if a building is reaching a certain height, it has the tendency that the wind and the sun brings a certain sway to it. it's actually a big problem for the traditional elevators. if the frequency of the ropes equals the frequencies of the building swayed, you get harmonics and things happened which are not so good. to counteract this, thyssenkrupp have installed a mass dampener, weighing in at 240 metric tonnes. it can also be programmed to create sway and test how their tech handles different weather conditions.

there's also the thorny issue of what happens when things go wrong. the tower houses a 250 metre fall shaft, which is used to drop things from a fantastic height, to see how they break... argh! whoa! that's going to —30 into the ground... that's mad, it makes me feel quite dizzy. the tower is also used to test ideas designed to tackle some of the biggest problems facing high—rise living. already today, lifts take about 40% of the usable space of a building. if you build higher, you need more lifts, and you are ending up with only lifts which makes no sense. so our inside area is in the core of the tower. only a few people really have the chance to see what we have built and what is running there. and elevator without any ropes.

so, this is something revolutionary. instead of steel ropes, the cabin is carried by linear motors. the same tech that drives japan's bullet train at 500 kilometres per hour. as well as eliminating the speed and height restrictions of today's tech, it allows passengers to travel sideways as well as up and down, just like willy wonka's fantastical elevator in charlie and the chocolate factory. behind the car, we change this exchange, 90 degrees. get prepared for the horizontal movement while people are entering and leaving, and as soon as the doors close we can go sideways to the next shaft. this is the most important thing, that we come back to a circulating system. so, re—inventing the paternoster. using this circular pattern means a lift shaft could hold ten or more cabins.

much more efficient than the single up and down ride today's elevators are limited to. and this will only become more important when we start looking at elevators reaching perhaps 1000m or more into the sky. that was kate, and that was amazing. not that the most impressive innovations have to be the highest tech, of course. as i've often said, some of the most inspiring innovations are those in the developing world that use pretty low technology to do really important things. case in point, dan simmons heard about a group of people who are using a mobile phone to save lives in nairobi... i'm on my way to thika, an hour's drive south of the capital to see one of the first centres in kenya using phones to diagnose cancer. it's essentially a smartphone

with a scope offering 42 times magnification. that allows the camera to be placed a comfortable distance away from the patient. a powerful light comes with the system. it's even brightness is critical to avoid misdiagnosis. violet, what is the biggest change that you have seen since this was introduced to your clinic? i have a lot of clients, who have to go to the clinic centre if they can do their own diagnosis, they are not going to need violate any more. laughter many women do not go for the screening. it has been too expensive and because of a lack of education, many who do go feel it's a waste of time if they get the all clear. that's why violet's job is to explain as well as test. i use this to check your cervix... scans used to cost $40 to $50 — over half a week's wages. this scan costs $10.

when a patient comes, you view their cervix and you have an opportunity to address them and to talk to them about cervical cancer. so, the hurdle that was previously there was education in relation to cervical cancer but now we have seen an improved attitude toward cervical cancer and increased screening. and with this, we can screen any woman, anywhere. the system isn't cheap. it is sold at $2000 a unit, but it has already seen an 80% increase in the number of women being scanned at this clinic over the last year. if kenya's new government decides to back the scheme, it could become a major weapon against a major killer. that was down in nairobi, and that's it for this week. over the next couple of weeks we will give you the chance to re—watch two of our favourite

programmes from the year so far — two india specials. we will be travelling across the country to meet the people working hard to change lives, save lives, and maybe, one day, discover new life. i hope you enjoy watching them as much as we enjoy making them. do not forget we are on twitter and on facebook. thank you for watching, we will see you soon. it will not be a bad weekend over all across the british isles, but thatis all across the british isles, but that is not to say we do not have a

couple of lies and ointment. through the morning we have had notjust one but two weather fronts bringing some cloud and the chance of some rain to some parts of the british isles. we will drag this fun out of scotland and to some cloud and rain particularly into the eastern side of the pennines, north—east of england not faring too well. improving situation across the south—east and the vale of cloud passes. a passing shower elsewhere and a lot of iweb. this evening, dragon though showers out into the novelty, going across the north of scotland, but where this is clear which it will be for many on the diagonal, it will turn out to be a cold night that is good news if you are trying to spot in the meteor showers. it leads to a cold start on sunday, but the bright ones are many. cloud filling in across the south—western quarter. a high in the day of 22—23 celsis. good afternoon. the chinese president, xijinping, has urged the united states and north korea to show restraint amid the growing crisis over

north korea's nuclear programme. during a telephone conversation with mr trump, the chinese leader urged both parties to avoid "words and actions" that could increase tensions. earlier today, the us president called the governor of guam to show his support for the us territory, which north korea has threatened to fire missiles at. from seoul, robin brant sent this report. first, he threatened fire and fury in north korea,