H.E.A.T. Watch may sound like a term used to describe summer's impending warm weather, but on the streets of Oakland, Calif., in areas actress Jada Pinkett Smith refers to as the "track," it represents help for the estimated 200,000 minors who fall victim to human trafficking and commercial sexual exploitation in the United States each year.

It's a crisis that Smith says her daughter, Willow, brought to her attention, and one that proves to be especially critical for young girls Willow's age.

On the eve of the U.S. State Department's 2012 human trafficking report, Smith sat down for an exclusive interview with The Huffington Post, sharing her knowledge of the trafficking crisis at hand and how an encounter with actress Salma Hayek prompted Smith to lend her own voice to the cause.

"We've always looked at human trafficking as being a problem over there, somewhere else, but it's actually happening inside of our borders ... in our own backyard," Smith said. For her, the battleground is Oakland, where she's been boning up on information and drawing up an advocacy plan.

"Oakland is basically the center of my education. [It's] where they've created the H.E.A.T. Watch program, which is a task force specifically trained to deal with human trafficking," she said. It's also where officials have begun to close in on child trafficking rings and earlier this month shuttered two motels thought to be hotbeds for illegal activity.

According to the Los Angeles Times, California is home to three of the FBI's 13 highest-ranked areas for child-sex trafficking -- Los Angeles, San Francisco and San Diego.

Smith's efforts to stop trafficking parallel those of many others in the state, including representatives from Facebook and Microsoft who last month joined law enforcement and nonprofit leaders to create a new Department of Justice task force on human trafficking. Their goal is to devise best-practice guidelines for those combating human trafficking locally and online.

And in the age of Instagram and Foursquare, the Web is precisely what Smith says parents need to pay attention to. "The Internet is one of the biggest lures for young people getting caught up in human trafficking," she said. "I can't tell you how many stories I've heard about people who have met someone at a park or a mall and got snatched up, with their parents waiting for them in the parking lot!"

A 2010 report from NPR that highlighted a first-hand account of a young woman who was kidnapped into a trafficking ring at the age of 15 noted some 76 percent of transactions for sex with underage girls start on the Internet.

The crisis conjures some striking parallels to recent missing-persons cases and their prevalence among African Americans, but Smith thinks the trends are only loosely related and hesitates to call trafficking a more pressing issue for minorities than for other groups.

"I think it's especially important in all communities. There are very, very high numbers of African-American and Latina women who are trafficked, but that's not to exclude white women or Asian women," she said.

With a perspective that "one woman is every woman," Smith is working instead to help others identify the face of trafficking.

"Modern-day slavery wears a different face because you don't see chains," she said, noting her movement's ironic timing with the 150th anniversary of the Emancipation Proclamation. "We have to be able to differentiate what trafficking looks like versus a gentleman coming into a hotel with his niece or daughter, or two girls sitting on a bus stop waiting for a bus and not for 'John'."

Smith points to some of the "faces" she's encountered -- children being sold by relatives their parents trust; immigrants being sold on the promise of a better life; and women being sold by men they love, a storyline that serves as the basis for a video she produced with actress and fellow activist Salma Hayek.

Here, Smith talks about her vision for the piece and what the Spanish lyrics mean:

WATCH:

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  • Thailand

    In this picture taken on August 18, 2009, a Thai bar girl waits for customers outside a bar in Sungai Kolok, in Thailand's southern province of Narathiwat. The sun hasn't set, but already the music is pumping and the disco ball is rolling in the Sumtime Bar, where Malaysian men are enjoying the drinks and women available on this side of the Thai border.

  • Kinshasa, Congo

    A 12 year-old prostitute cries in a medical center in Kinshasa on November 7, 2010 after she was stoned by an other child prostitute. Child prostitutes earn about 2000 Congolese Francs (2,2 USD) for a sexual intercourse. More than 20,000 children live in the street of Kinshasa, a city of about 10 million. About a third have been accused of witchcraft and rejected by their families; a recent development in a disintegrated Congolese society undermined by poverty.

  • Bangladesh

    A Bangladeshi sex worker takes an Oradexon tablet in a government-registered brothel in Faridpur, some 100 kilometres (60 miles) outside Dhaka on June 20, 2010. Whenever Bangladeshi brothel owner Rokeya, 50, signs up a new sex worker she gives them a course of steroid drugs often used to fatten cattle. For older sex workers, tablets work well, said Rokeya, but for younger girls of 12 to 14 -- who are normally sold to the brothel by their families -- injections are more effective.

  • England

    A newspaper advertising board outside a corner shop in the Lancashire town of Rochdale after nine men were arrested for child sexual exploitation on January 11, 2011 in Rochdale, England. Greater Manchester Police have arrested nine men as part of an investigation into sexual exploitation and questioned on suspicion of rape, inciting child prostitution, allowing a premises to be used for prostitution and sexual activity with a child.

  • China

    This photo taken on June 21, 2011 shows Chinese police (L) watching over a group of massage girls suspected of prostitution during a raid on a parlour in Beijing in a vice crackdown ahead of the celebrations for the founding of the Chinese Communist Party 90 years ago. Rapid social and economic changes have made China 'prone to corruption' and the ruling Communist Party faces a major challenge stamping out deep-rooted official graft, an official said on June 22.

  • Paris

    A man wears a board with a slogan as he demonstrates with prostitutes and members of the Union of Sex Workers (Strass) on June 2, 2012 at the Pigalle square in Paris, to claim their rights to work in dignity and respect.

  • Guatemala City

    Firefighters help a prostitute get out after she got trapped in a tunnel where she remained hidden during an operation against human trafficking at the 'Super Frontera' bar, late on April 21, 2012 in Guatemala City.

  • Nicaragua

    Nicaraguan sex worker and member of NGO Girasoles Nicaragua (Nicaragua Sunflowers), Wendy, waits for clients on a street in Managua on April 18, 2012.