but still this image stayed alive in my soul ♪ this is "nightline." >> tonight, president obama announcing an historic deal with iran. >> matters of war and peace. >> will the agreement prevent a nuclear-armed iran? imagine controlling every system in your house from your phone. well, the future is now. welcome to the smart home. but watch out. could some of it actually be used against you? and this isn't your mother's prom-posal. teenagers spending hundreds if not thousands of bucks before the big event. tonight, how the over the top world of getting to yes has escalated into a major business proposition.

but first, the "nightline 5." which are ♪ ♪ ♪ turn around ♪ ♪ every now and then i get a little bit hungry ♪ ♪ and there's nothing good for me around ♪ ♪ turn around ♪ ♪ every now and then i get a little bit tired ♪ ♪ of craving something that i can't have ♪ ♪ turn around, barbara ♪ ♪ forever i've been praying for a snack in my life ♪ ♪ and now i have a brownie ending all of my strife ♪ ♪ i finally found the right snack ♪

♪ ♪ good even. thanks for joining us. tonight an historic agreement with wufb america's staunchest'd ver sierras. iranian leaders agreeing to give unprecedented access to international nuclear weapons

inspectors. in exchange for easing economic sanctions against the isolated country. if iran cheats says president obama, the world will know about it. how's the plan being received? for the moment with a lot of celebrating. it's abc's chief foreign correspondent terry moran. >> reporter: good evening, juju. the deadlines came and went here. the negotiators, some of them came and went. but those who stuck it out emerged after several marathon sessions to announce a breakthrough. in the words of secretary of state kerry, they have opened a window of possibility for a deal that is hoped will bring iran's nuclear ambitions under strict international control. on the streets of tehran tonight, there was joy. to so many of the people of iran, so long cut off from the world economy, this deal is about more than nuclear technology and international relations, it's about hope. in luzon, switzerland, where negotiators worked marathon sessions to get this deal done

there was a sense of relief more than anything else. for secretary of state john kerry, today was a personal achievement. but he acknowledges there's still a lot of work to do and the deal is far from done. >> could this whole thing still fall apart in the next few months will you hammer out the -- >> of course it could. >> what's the chances of it getting all the way? >> i don't have any way to make that prediction. >> 50/50? >> i'm not going to play that. this is a way of making the world safer. >> reporter: but how? under today's agreement, iran's nuclear programs will come under strict international controls and some of them will be rolled back. in exchange for economic relief lifting those crippling sanctions on iran. iran will also get to keep much nuclear technology and research as long as it can be verified that it will be used for civilian purposes. electric power generation. medical technology and the like. president obama in the rose garden insisting he drove a tough bargain. >> this framework would cut off

every pathway that iran could take to develop a nuclear weapon. this deal is not based on trust. it's based on unprecedented verification. >> reporter: critics say the agreement makes the world more dangerous. >> this deal is going to threaten america's national security interests and it's going to lead to a nuclear arms race. >> reporter: republicans also say the president was desperate for a deal to burnish his legacy. >> there's a sense that president obama wanted this deal more than iran did. and that weakened your position as a negotiator. >> not on your life. president obama on several occasions could not have been clearer about my instructions to walk away if x, y or z doesn't happen. >> reporter: okay, enough with the politicians. let's hear from the people from those with a special stake in the outcome here. >> this was a big deal. it's transformative. >> reporter: this evening we brought together five iran

iranian-american professionals to talk about what this deal means to them. >> i think it's a very hopeful and exciting moment. because this is an opportunity for people that have been suppressed for so long to kind of have a voice that's going to help the economy in iran. and this is going to help the welfare and economy of the iranian people. >> from a selfish and convenience point, hopefully it means more flights to iran by a lot of the airlines because of the sanctions pulled out and canceled flights, it's difficult to get there from the u.s. >> there's this dehumanization of iran as a country or a government, as you name it supporter of terrorism -- >> it's a complex country. just as the united states is. >> reporter: they're hoping today will mark a change in the way americans view iran and iranians like themselves. for these iranian-americans, for those people on the streets in tehran, for all those in both countries, this day of hope is shadowed by a long, dark history.

1979. iranians rise up in self lose head by the ayatollah khomenei, a fierce religious leader and critic of the u.s. then in november that year iranian students stormed the american embassy and take 52 u.s. diplomats hostage for 444 days. "nightline" got its start covering the crisis which riveted and infuriated the country. >> again today, iran is the major story. >> reporter: the hostage crisis led to decades of hostility between the u.s. and iran. no diplomatic relations at all between the countries. by 2002 president george w. bush lumped in iran in with north korea and iraq in -- >> an axis of evil arming to threaten the peace of the world. >> reporter: so the die was cast. inside ever raun life was never the same after the revolution. >> i was 8 years old at the time of the revolution in 1979.

and my life as a girl from the middle class family in iran was affected by the revolution in very profound ways. >> reporter: she was born in iran and now lives in the u.s. >> as a young girl i had to wear a head scarf. i could no longer do a lot of things i could do. islamists believed women could not wear swimming suits. even if they were as young as 8 years old. and swim in public. >> reporter: a "new york times" correspondent, show fled the country with her family in 2009 after the regime crushed popular protests and threatened her directly. today, she felt close to the home she has lost. >> today was one of the happiest days of my life. this is the first time that iran and the united states managed to end one of the biggest crises through diplomatic solutions. >> reporter: but is that hope justified? and can it be the two countries with so much bad blood between them could trust each other,

work together? >> iran is a country that has been at the center of the world for a very long time, a 3,000-year-old history. the population yearns to reconnect with the world. >> reporter: so much hard work ahead still to see if the hope there and here can change history. for "nightline," i'm terry moran in lieu zahn, switzerland. next everything in this smart home is connected. does it all make sense? later, proms getting pricey. the new fad that has teens going all-out and shelling out. this kis makes stains like you would not believe so when we had him, we bought one of those he washing machines just trying to keep up but that thing ran forever turns out it wasn't the machine, it was our detergent. so we switched to tide turbo clean and now we get way cleaner clothes way faster which is so appreciated make a mess make a mess make a mess, make a mess make a big mess your first words

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chances are you probably have a smartphone. but not many of us have a smarthome like the one we're about to enter. if you're a techie this might be the house of your dreams where almost everything is rigged to be controlled with a simple touch screen. tonight abc's neal karlinsky finds out the dream home can lead to some rude awakenings. >> reporter: stacy may live in a normal austin, texas, neighborhood. but inside her home it's more like the jetsons. >> say hello to our new maid rosie. >> can you throw a forward pass? >> reporter: at least as close as you can get. and all the weirdness that goes with it. >> okay, ubi. may some music. >> okay i will play cher. >> reporter: so maybe some technology isn't quite ready for primetime. >> that's the dumbest gadget i own. >> reporter: stacy's world is a

small window -- >> when you touch it it turns on. >> reporter: -- into what we could all have with patience and perseverance at&t calls digital life. where you can remote control virtually your entire house from your phone. smarthome gadgets are poised to be the next big thing. sales of smart gadgets are expected to exceed 36 million unit in the next two years. her devices and appliances are all connected to each other and to the internet. which means stacy can control them remotely from her phone. >> when i look at the app i can see that the garage door is closed. when i want it to open i hit it. and boom, it opens. >> what's the big deal having a smart garage door? >> you can look at this app and says, you left your garage door open and you're at work. now you can close it. >> you've got a weird door lock too, huh? >> it works like a normal door

lock. lamp it, unlatch it. when you open the door there's a keypad. and you just -- boom. >> reporter: once inside she spends a lot of time talking to herself. well, actually to one of her many voice-controlled gadgets. >> this is the amazon echo alexa. what is "nightline"? >> "nightline"," program broadcast by abc in the united states. >> pretty cool. >> do you want to give it a try? >> reporter: even alexa can stumble. >> what is the stock market doing? >> hm. i'm not sure what you meant by that question. >> i take it there's a lot of that sort of thing going on in the house. it doesn't always work. >> if you're going to live in a smarthome, you've got to be prepared to live in a home that is a bit of a trial and error process. >> are you an extremely and abnormally patient person? your whole house is filled with potential problems. >> i spend probably about an hour a week troubleshooting my

house. so -- that's probably because i have a good 40 gadgets in here. >> reporter: her smarthouse might outsmart a thief. >> that's pretty cool. >> reporter: could it be an easy target for another kind of criminal? >> you ever think about that, when you wire up your house, someone could control it? >> that's not a huge concern of mine. that's a lot of effort to go through. >> you're not too worried? >> who's going to come after me? >> reporter: that's what this ohio couple probably thought until someone hacked into their baby monitor and started yelling at their newborn. they spoke to fox 19 in ohio. >> i also heard a voice again start screaming at my daughter. he was screaming, "wake up, baby wake up baby." >> reporter: we invited a professional hacker with her permission, to try to break in electronically. >> i have my directional antenna antenna. >> reporter: amir, whose real job is to help companies find weaknesses in their own products demonstrates what malicious hackers could do parked just outside your home.

>> you can literally drive up and down this neighborhood with that weird-looking antenna sticking out of the car and you can figure out the wi-fi from inside people's homes? >> absolutely, yes. >> what can you see? >> files, e-mails, conversations. everything that is on their computer becomes easier for me to access once i'm on their wireless network. >> reporter: back inside it's a tech geek paradise. >> i can't believe i'm asking you to show me your lightbulbs. >> these are smart and they're connected. so we can do things like -- >> what's happening? >> do you feel like the sun is setting in here? >> i'm glowing. >> we can do deep sea. >> whoa, look at that. how much are these lightbulbs? >> you have to buy a starter kit, $200. each additional lightbulb is $60. >> $60 for a lightbulb? come on. >> i know. but they're so fun. these last for like 22 years. theoretically. they're l.e.d.s.

>> reporter: aside from gadgeting lighting her house, some go on her body. a ring that lets her know when she's getting a call or text. >> but it's not working. >> okay, right now it is not working. that is an excellent point. >> reporter: a representative from ringly says perhaps stacy didn't set up her ring properly. when we reacheded out to the company reps from some of these gadgets that didn't perform well, they told "nightline" that they're constantly working to improve their products. back outside, amir is running his own tests. it turns out hacking is a two-step process. first getting access to stacy's wi-fi. something amir calls the handshake. >> we got it. we got the handshake. >> reporter: now he has to run what he's found through a decoding program to crack the password. here's where it seems that technology's frustrations can work for you. because even weeks later, our hacker's program still hadn't got the password. with more than a little help

from stacy, like her actual password amir shows off what he can do once he has access to the network. >> we're going to go ahead and turn on some of her appliances. >> i think within five years, most people will have at least -- >> that is something out of a horror movie. >> man. can you imagine? >> like we knew something was going to go on. >> yeah. >> that's terrifying. >> that was a real jump. >> we're going to go ahead and unlock the door, her back door. >> oh! >> i think that was your lock. >> that was our lock. >> let's go look. >> reporter: that isn't any laughing matter. >> see but that's the real fear, right? the other stuff's funny, whatever. but someone can unlock your house. >> although if someone really wants to get into your house, you can pick a lock. >> isn't that the modern-day -- there it goes again. isn't that the modern-day lock pick?

there's a guy outside with a laptop who's opening and closing your door lock. >> it is. and i don't like it. >> reporter: the lamp went on and off. the blinds went up and down. amir was in even though he was outside. when we got the two of them together stacy had the same questions anyone else would have right about now. >> if i don't want a guy like you hacking into my network, what are the things i should do as a homeowner? >> make sure that you keep the software up to date. make sure you use a strong pass phrase that's unique and contains special characters. your best bet is a password that's over 15 characters. >> reporter: you don't have to be smart to have a smarthome. what you really need is a heavy dose of patience. because for the millions ready to embrace it, the future is now. if you can just get it to work. >> alexa, set a timer for two minutes. and sometimes she doesn't do it. >> reporter: i'm neal karlinsky for "nightline" in austin, texas.

>> what do you think about smarthomes? are the benefits of high-tech living worth the potential risks? head to our "nightline" facebook page and let us know. next with prom season around the corner you won't believe what the new big-ticket item is. and even celebrities are getting in on it. >> if you don't go to the prom with stefan maybe your best course of action would be to tread lightly. it's just you and your honey. the setting is perfect. but then erectile dysfunction happens again. plenty of guys have this issue not just getting an erection, but keeping it. well, viagra helps guys with ed get and keep an erection. and you only take it when you need it. ask your doctor if your heart is healthy enough for sex. do not take viagra if you take nitrates for chest pain; it may cause an unsafe drop in blood pressure. side effects include headache, flushing upset stomach and abnormal vision. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours.

stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. ask your doctor if... ...viagra is right for you. the volkswagen golf was just named motor trend's 2015 car of the year. so was the 100% electric e-golf. and the 45 highway mpg tdi clean diesel. and last but not least the high performance gti. looks like we're gonna need a bigger podium. the volkswagen golf family. motor trend's 2015 "cars" of the year.

you've been part of the family for as long as i can remember. and you just mean so much to all of us. the holidays wouldn't be the same without your crescent rolls. we got you a little something. we got you jeans.

it's about time. pipin' hot pillsbury crescent rolls. make easter pop! well, i drove grandpa to speed dating this week, so i should probably get the last roll. dad, but i practiced my bassoon. and i listened. i can do this. everyone deserves ooey gooey pillsbury cinnamon rolls. make the weekend pop! i would bet if you have a teenager in your life you already know that prom season is

soon upon us. but you may be surprised to discover just how much cash kids these days are shelling out long before they pin a corsage on anybody. >> one two, three, four! >> reporter: forget flowers or the dress. this year your teen's biggest expense expense, breaking the bank on the way to the dance of her dreams not the limo or the rental tux. but instead that picture-perfect prom-posal. >> prom-posals are over the top way of asking a girl or girls ask guys to go to prom with them. no longer are kids just asking after class, do you want to go to prom with me? now they are twerking with things that say "prom" on them. >> reporter: teens hoping for "yes" are getting more and more creative. choreographing flash mobs. gift-filled scavenger hunts. rowing their way to romance. >> why not buy her a dress and ask her to be my date?

>> there is a sense of wanting to outdo other kids. ♪ go to prom with me ♪ >> reporter: bear nothing expense teens are shelling out big bucks to pop the question. this year the average prom-posal will cost a whopping $324. some recruiting celebs to get in on the game. the new york jets giving this girl some muscle to help her ask her football-crazed friend to prom. >> will you go to prom with sarah? >> reporter: bryan cranston breaking a seriously bad question to these promgoers last year. >> if you don't go to the prom with stefan maybe your best course of action would be to tread lightly. >> reporter: abc news even got in on the fun. helping josh ask sammy to prom live on "gma." >> i want sammy to be able to say, my prom-posal was the most over the top thing that ever happened to me. >> reporter: an over the top

trend turns teenagers into puddles everywhere. >> i hope she says yes. thanks for watching abc news. "world news now" is coming up soon with overnight breaking news. tune into "good morning america" tomorrow. as always we're online at abcnews.com. good night, america. ♪turn around!♪ ♪every now and then i get a little bit hungry♪ ♪ and there's nothing really good around♪ ♪turn around!♪ ♪ every now and then i get a little bit tired of living off the taste of the air.♪ ♪turn around barry!♪ ♪ i finally found the right snack!♪

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