this is bbc world news. i'm reged ahmad. our top stories: demonstrations along the border with israel. president trump cuts aid israeli defense forces to el salvador, guatemala say their artillery has struck a number of hamas military posts and honduras over what he calls in the gaza strip in response their failure to stop immigrant to five rockets fired at israel. caravans heading for the us. facebook chief mark zuckerberg says it's time for new rules the anti—corru ption candidate, zuzana caputova, has won to govern the internet. the presidential election in slovakia, making her after a day of protests the country's first by palestinians in gaza to mark female head of state. a year of weekly demonstrations on the boundary with israel, israeli defense forces say they've it's slovakia's first major poll struck a number of hamas military since the murder of an investigative posts in response to journalist, which plunged the country into political crisis rockets fired at israel. a year ago. and the rolling stones the chief executive of facebook, postpone their north america tour mark zuckerberg, says the internet needs new rules. he's called on governments and regulators to take a more active role in controlling content, and for companies to be held accountable. he's previously resisted government intervention. a bbc investigation has discovered rogue traders are selling tens

of thousands of pounds worth of receipts and invoices in a black market trade to cheat uk taxes. the dealers, who advertise online, sell authentic documents to enable others to fraudulently claim back vat and reduce the amount of income tax they pay. colin campbell has the story. how much is here? it's £10,500. £10,500? he wants to sell me £10,000 worth of construction material receipts for £800, and boasts they can be used as a way to work around 20 grand's worth? an illicit black—market trade, i contacted dealers posing as a self—employed builder, seeking to use the receipts to evade tax and fraudulently claim back vat. with a ring binderfull of construction material receipts, this polish builder wanted £2,500 for £30,000 worth of receipts. pay cash?

paid cash? another rogue trader, this time decorating receipts. these guys are essentially committing tax fraud. i showed the footage to a tax expert. it's a crime, because what it's doing is enabling people to reduce their tax bill and their vat bill illegally because they haven't actually incurred the expense that they're going to claim for. i found more than a dozen dealers advertising the receipts on uk—based polish classified ad sites.

hmrc says it's committed to ensuring all companies and individuals pay the right tax at the right time, and will pursue those who fail to do so. 0k, great. all the dealers we spoke to had a ready supply of receipts. i'm actually a journalist from the bbc. but none wanted to discuss their illicit trade. what you're doing is criminal. it's fraudulent. you are helping people cheat the tax system, aren't you? no. vat? self—assessment? you're helping people cheat their tax. i don't know. you've got £30,000 worth of receipts here. a previously hidden crime, now a brazen illicit trade that's hard to combat. another form of tax evasion, cheating the country of much—needed revenue. colin campbell, bbc news. now on bbc news, time for click.

this week: we investigate the sexual exploitation of children on unencrypted messaging apps, and the undercover bot trying to catch the perpetrators. often on the show, we talk about the positive impact of tech on our lives — its powerfor social good bringing us together, solving pressing problems, and generally enriching our lives. but there are, of course, much darker sides to technology. we have often heard stories of exchanging material on the so—called ‘dark web‘

or grooming children in chat rooms, sometimes to meet up with them and physically exploit them. but in recent years, the un has been warning of a trend towards what is being called ‘webcam sex tourism'. and in some countries, like the philippines, it's become particularly acute. the un's children's agency, unicef, has dubbed the nation the global epicentre of the live streaming sexual abuse trade. we sent richard taylor to investigate the problem and look at how technology is being turned against the perpetrators, to help try and bring them to justice. children crying. in a remote sanctuary in the central philippines, the trauma of child cyber sexual abuse rings out. this is primal therapy,

used to release negative emotions. the facility can house around 30, but it is thought as many as 100,000 kids across the country may be at risk. and recent technological risks are threatening to turn what has long been an endemic, nationwide scourge into a global epidemic, with the philippines at its core. over the past decade, police have been trying to catch facilitators of abuse in so—called cybersex dens, shacks in urban slums where kids are taken to engage in sex acts over webcams for the pleasure of a largely western audience with the means to pay. a handful of the victims who were rescued end up at specialist cybersex rehabilitation centres, like this one in the capital, manila. stories abound of abuse, shockingly often sanctioned by their own families.

angela is one such victim, taken by a family friend and trafficked across the country into a cybersex den at the age ofjust 12. it's really shocking because i did not expect that. i don't have communication with my parents and i cannot go out. they just controlled me. i do not have the right to say no, because he is going to slap me or smack me too. cybersex abuse, it really breaks our heart because a lot of the victims' parents are actually part of it sometimes, they even believe that there is really no harm brought to these children because they are just performing. but in reality, that is not what happened, because the psychological impact of the abuse to the girls is really severe. but what makes the philippines the epicentre of the cybersex trade? it's complex, but poverty clearly plays its part, using kids to make a fast buck

is especially alluring for large families struggling to get by. and the widespread use of english here smooths direct communication with westerners. but today, this already combustible mix is being fuelled by yet another ingredient — access to cheap smart phones and internet, which together are threatening to transform this already toxic phenomenon into something far more deeply rooted in philippine society. investigators say it's been a game changer. in the past, when we were combating this form of crime, what we were finding was we were looking for computers and now really, what we're looking for is what is mobile and what is cheap, and so it is really cellphones with a camera, internet service through the cellphone company that is usually not registered, and that broadens who can actually abuse a child in this way. and initial contact today takes place in live streams, porn and dating sites, alongside consenting adult interactions.

some women here themselves act as facilitators, not simply flaunting their own sexual wares, but pimping out younger girls too. you will have girls of 12 years old trying to sell a girl of eight, seven years old. you have girls of 17 year olds selling a sister of four years old. ay age you want. any age you can imagine. you know, some will even show a baby. today, the online monetary transactions are frictionless, the performances take place in private settings, using legitimate mainstream apps where anonymity using legitimate mainstream apps where anonymity is practically but guaranteed and paedophiles can realise their wildest fantasies. there is no break on their behaviour, so the most female—unfriendly, aggressive and violent things come out of these men. some pay for really maiming a child orfor cutting a child. so what can be done? police resources have been mobilised

but there has only been a handful of successful prosecutions over the years, and the impermanence of live—streaming means evidence is hard to amass. the internationaljustice mission specialise in this kind of fieldwork. they believe successful law enforcement will be a big deterrent, but the tech companies themselves need to take responsibility. the police actually require the capacity to investigate but aside from that, you know, they don't operate in a vacuum and so, since online sexual exploitation of children involves electronic service providers, they are part of the solution. we contacted some of those tech companies, where cybersex abusers both whatsapp and viber told us they co—operate with the authorities and law enforcement when required. whatsapp also says it uses microsoft's photo matching technology, photodna.

this flags users's photos to those already on a database. but this doesn't address the core problem, namely that all live streams between users are encrypted and not subject to any oversight. some organisations are proactively creating technology to ward off the predators. my my name is sweetie. i am ten years old. sweetie began five years ago as the brainchild of the kids's welfare organisation, terre des hommes. iam not i am not real. what sweetie does is it is primarily a chat bot but it also involves an avatar, that can be used on occasion. the chatbot goes into chat rooms, is present in the room, never initiates a conversation, for legal purposes, and is approached by predators that will be in this chat room, and the main purpose really is to identify people the main purpose, really, is to identify people to a sufficient degree of detail so that you can say "hey, we really do know who you are

and you can't get away with this." early versions of sweetie required human operators. today, she's fully automated. they will start chatting with her and through a preprogrammed set of lines, of course, the conversation take place, and she can do that simultaneously with tens of people of perpeatrators at the same time. but despite amassing troves of detailed personal information, resulting prosecutions have been thin on the ground. ideally, we have sweetie out there deployed 24/7 globally, but realities of course is that we need to find that within the legal systems in which we can operate. actually having law enforcement use the software, developing their own messages makes it so much more effective. so that is what we try to do when we're working with law enforcement in the various countries in asia and also now in africa, where we are developing cooperation with law enforcement as well. here in the philippines, many are at least waking up to the urgent need to protect the young. the hope is that step by step,

a co—ordinated international response can save more vulnerable children from falling prey to the cybersex predators. hello and welcome to the week in tech. it was the week in which the galaxy‘s first all—female spacewalk was cancelled due to a lack of appropriately sized spacesuits. the eu passed a law which holds tech firms responsible for material posted without copyright permission. and google announced an ai ethics panel to oversee projects such as facial recognition and potential algorithmic bias — something which will be handy in estonia, which is to create its own ai—powered judge. it's hoped it would be able to rule on small claims disputes of less than £6,000, and so clearing the backlog of cases faced by human judges. new cars sold in europe will probably have to be fitted with speed limiters from 2022.

the new rules, provisionally agreed by the eu, will mean on—board cameras and gps systems will be used to spot road signs and automatically slow speeding vehicles down. speak to the hand, the world's first palm vein airport security system went operational this week in korea. fujitsu says its product is more accurate than other biometric tests. passengers taking part will be able to take domestic flights without the need to show their national id card. and finally, researchers at google seem to have had some time on their hands. they've created the tossingbot. it's a robot that uses deep learning and trial and error to figure out the best way to throw something. we are back at the steve jobs theater at apple hq once again.

but this time, the announcement will be a little different. instead of a new device, apple now want to talk about entertainment. from spielberg to big bird, apple is bursting into hollywood with what it hopes will be a wildly popular tv service of its own. unlike anything that has been done before. it has announced apple tv+. a subscription service launching later this year, designed to rival what is already out there from netflix and amazon. the company hasn't said how much it will cost, but it has promised you will be able to access exclusive content from stars like oprah, reese witherspoon, jennifer aniston, kumail nanjiani and more. and you'll be able to get shows from other networks for an additionalfee, just as you can on

amazon prime video today. because of that, i think it is fair to say apple will need to stand out. oprah winfrey is obviously a great star and it is great for her to come in and say i will do uplifting stuff that will raise everyone‘s spirits, i don't know if you can sell a tv service with that. speaking of additional fees, you may find yourself being asked to pay a lot more of them from now on. also announced here was apple news+, a subscription news service that costs $9.99 per month. for that, you get access to around 300 or so magazines you'd ordinarily have to subscribe to individually. however, only two newspapers have signed up to apple's plan — the la times and the wall streetjournal. apple also came up with a gaming subscription service called apple arcade, which, if you watched the show last week, you'll know sounds pretty similar to some of what google recently unveiled. you won't find these games

on any other mobile platform or in any other subscription service. and then there was this. apple card. a credit card apple has made in partnership with megabank goldman sachs and mastercard. what apple is trying to do with all of this, if you haven't noticed, is make more money from what you do with your phone. so, apple is seeing a dip in demand for its hardware. theiphone is its biggest moneymaker and sales of smartphones have kind of dipped. they still sell millions and millions, don't get me wrong. but as a growth engine, it is not the growth engine it was. over the past year, we have heard them talk about services, making money from services. and certainly, in the last few quarters of their earnings, they have been getting a lot of money from services — that is where the big growth is. so, when it comes to tv, apple did just about what we expected. big stars, all paid up and ready to go. but i'm wondering whether they can truly be as creative as netflix and even amazon when it comes

to making exciting television. but maybe it will not matter because as soon as they launch this thing, it will be on a billion devices just like that. that was dave in california. now, an estimated 700,000 people are living with autism in the uk alone. across the world, more and more people are being diagnosed with the condition. april 2 is world autism awareness day, which aims to help us all to understand more about the challenges faced by people with autism on a daily basis. high levels of anxiety are one of the most common difficulties faced by people on the spectrum. and paul carter has been looking at some of technologies which aim to help manage the stress levels. the situations that can kind of make me really anxious is almost every time i leave the house, because then it leaves my control and i don't really know what is going to happen beyond that. being in a big crowd of noisy people can just make

my whole brain shut down. i get anxious in social situations, when there is a group conversation. i feel anxious when meeting new people. the autistic people i have been speaking to have developed their own coping mechanisms. anxiety is a huge part of being autistic and a way around this, for many people, is writing lists. little things like you'll see me doing something called stimming where you'll see my hands start to fidget and it's just to try and regulate your energy a bit. train stations are a very relaxing place to be because everything is systematic. she recites platform announcement. potters bar, finsbury park and london kings cross. this train is formed of eight coaches. personal coping strategies aside, the role of technology is something academics are increasingly looking into. technology in various forms

can help autistic people understand their emotions, self—regulate and seek help. and one of these examples is the early—stage work being carried out by digital education researcher nigel neubert at the university of the west of england. he is looking at how vr can reduce anxiety in teenagers by teaching them practical tasks. it is being tried out at the somerset school where the pupils are training to work in a cafe. put the beans in the grinder. our children with a diagnosis of asd come with the belief that they are going to fail. the actually skill of making a coffee was the easiest thing to teach them, so that is where vr came in. and what i can concentrate on while i'm in the cafe today is saying hello to someone, they can concentrate on the social side as opposed to the skill side of thejob. it will help me overcome new places.

when i go in, it isjust me, there's no—one else. it will help me with fear of messing up and it will help me to know that that's ok, you can do that. another technology in the offing is the molehill mountain app being developed by king's college london and the research charity autistica. choose the worries you want to add to molehill mountain. bright lights, yep. that's a big one. we gave it to three volunteers to try out for a couple of weeks. based on cognitive behavioural therapy adapted for autistic people, this self—managing app tracks anxieties by asking autistic adults to input their daily worries into bubbles that then float over a mountain. their task is to then pop those bubbles, processing and preparing for their anxiety. when the user captures their worries, they are rewarded with tips to help them learn more about their situations. it all sounds fine,

but what did our users make of it? it seemed a bit illogical. how is popping these imaginary bubbles on a screen going to help? but it did help, massively. it is not going to solve anxiety in itself, it should not be used instead of that, but as an add—on, then, yes, absolutely, it's done great things. if i was having a bad day, to reflect on it at the end of the day that potentially would have been good, to just look over what has happened, etc. but there are definitely the negatives to the app like it asks you to add your worries. i added seven worries and then it told me i had too many worries. iwas like... don't tell an autistic person that. that is not ideal. it asked me to describe things in my own words and the words 'describe' and 'explain' are just... and 'imagine'... ah...yeah. what would have made it better for you? yeah, i think either if you'd asked direct questions on a number scale,

say, "how did you feel this on a scale of one to ten?" what seems to be clear is that the anxieties around autism are very individualised. a cloud—based software that's now offered by some areas on the nhs giving personalised solutions is called brain in hand. this system is also based on established therapies and coaching, and rests on health professionals working with users to devise answers for particular situations. when users become anxious, they use the brain in hand app to access solutions that have been programmed in for them. a worry that third—year university student rosie king has is getting lost. the app gives her solutions and helps to manage her emotions whenever this happens. there's a logical part of my brain that knows everything will be fine and you will get home just fine. but there is a bigger part of my head that is banging pots and pans, screaming, "you failed! you failed! "we are lost and we

will never get home! "what are we going to do? !" the app's anxiety monitor helps rosie reflect on how she feels and prompts her on prearranged tasks. but something that is especially comforting is the 24/7 red button back—up that connects her to a real live person. i've tried just doing the best i can, but i'm really freaking out. i only use the red alarm service when i am at my worst. when i am really low and i cannot control myself and i really need to talk to somebody. and that somebody is always there and thatjust feels great for somebody in my situation. while all of the technologies we have looked at can be beneficial for people on the spectrum, not least because they've had input from autistic people, there are more and more becoming available all the time. the beta project that is launching later this year is gathering a database of what is out there, including technologies to help tackle anxieties. there are technologies that target the general population

and cannot be used by autistic people. but, for example, there are sensory issues for autistic people and technology needs to adapt to those needs, to be non—threatening and to be effective. how many lenses do you actually need on your phone camera? one, two? lg thinks 5, even nokia has come in with nine. but actually, it depends on how you use your camera phone. so, 60 seconds, please. it's time for your guide. let's go! do you like to take pictures of your food or generally spend time in dark environments? sounds like you are shooting in low light a lot and experts say that the google pixel 3 and huawei's new p30, released this week, are leading the field. next up, are you a pinch and zoomer or do you prefer what i call the human zoom? look for optical zooms if you want to get close to the action and keep the details. but it will cost you.

many say the top of the ops are the iphone x and xs, the galaxy s9 plus and, again, the p30. shooting video on your phone gives it a massive workout, so remember to check you have something that has decent battery life and lots of space. those in the know rate the sony xperia xz3 for its fantastic slo—mo features and the oneplus 6t as a viable budget alternative with a brighter, long exposure night mode. made it, and withjust a few seconds to sp... and that is it for this week. don't forget, if you need is during the week, you can find us on social media. facebook, instagram, youtube and twitter at bbcclick. thanks for watching and we will see you soon.

hello again. we've got quite a change in our weather compared with yesterday, when temperatures reach 20 celsius in kew in greater london. for today, it will feel much cooler. temperatures nine celsius lower in the capital at 11 degrees. you will notice that change of cooler weather. a frosty start to watch out for. this streak of cloud will affect north much of the day. there will be a lot of dry and bright weather around, but the temperatures down on yesterday. it will be around 13 or 1a towards the south—east, the warmest part of the country. the sunniest will be northern england and northern ireland and scotland. a quick look at monday, after a dry and sunny and cold day, we will see the cloud gather in the northwest on

monday with outbreaks of rain and it will be cold enough for a little bit of snow over high parts of scotland. much colderfor of snow over high parts of scotland. much colder for tuesday.