next to him is -- [applause] and next to him is george gaston and elect to the district attorney of the city and county of san francisco in 2011 after winning more than 62% of the vote which in san francisco is very enviable and focused on reducing violent crime, protecting vulnerable victims and respecting with high school truancy and rel haven't to the conversation today. last is cheryl young and the chief executive director of gate path and oversees a large nonprofit in san mateo county and focus on turning disabilities into possibilities and she's a wonderful addition to the panel and it's an area that school districts have to deal with in terms of special needs and what we're talking about affects these children if not more than the other children so thank you cheryl. [applause] so we have a large panel and they can all tell you i sent them an email yesterday said you will have a brief time to say what you do, what your organization is doing, address the needs of the kids suffering or facing bullying and i told them they have two to three minutes, not 23 minutes and i'm going to ho

. >> reporter: george gaston is san francisco's district attorney. >> listening to an area where a technologicals basically worthless on the secondary market. >> reporter: he said the solution is a kill switch which would disable a stolen phone, making it worthless to thieves. but telling cbs news when manufacturers like samsung made smartphones with kill switches the five major carries, at&t verizon, sprint, t-mobile wouldn't support it. in e-mails obtained by cbs news sell samsung they've received responses from all five major u.s. carriers and they've all denied our preload in their image. meaning, the major carriers refuse to sell a smartphone with kill switches built in. gaston said -- >> we're talking about a $60 billion a year industry. and about half of that seems to be a patch to the replacement phones that are being sold. so we're talking about a lot of money here. >> reporter: the wireless association which represents service providers said that they're working on alternatives to a kill switch and told cbs news ctia and its member companies worked hard over the years to help law enfor