The crystal-encased chip, which is the size and shape of a grain of rice, is injected into clients' bodies with a syringe.

A transmitter in the chip sends radio signals to a device, carried by the client, with a global positioning system in it, say makers Xega. A satellite can then pinpoint the kidnap victim's location.
 

Xega, based in the central Mexican city of Quererato, designed global positioning systems to track stolen vehicles until a company owner was kidnapped in broad daylight in 2001. Frustrated by his powerlessness to call for help, the company adapted the technology to track stolen people.

Most people get the chips injected into their arms between the skin and muscle where they cannot be seen. Customers who fear they are being kidnapped press a panic button on an external device to alert Xega, which then calls the police.

Outside of Mexico, U.S. company VeriChip Corp uses similar radio-wave technology to identify patients in critical condition at hospitals or find elderly people who wander away from their homes.

According to the Israeli daily Ma'ariv, whether the United States and Western countries succeed in thwarting the Islamic Republic's nuclear ambitions diplomatically, through sanctions, or whether a US strike on Iran is eventually decided upon, Jerusalem has begun preparing for a separate, independent military strike.

Because of Israel's lack of strategic depth, Jerusalem has consistently warned in recent years that it will not settle for a 'wait and see' approach, merely retaliating to an attack, but will rather use preemption to prevent any risk of being hit in the first place.

Ephraim Sneh a veteran Labor MK who has recently left the party, has reportedly sent a document to both US presidential candidates, John McCain and Barack Obama. The eight-point document states that "there is no government in Jerusalem that would ever reconcile itself to a nuclear Iran. When it is clear Iran is on the verge of acquiring nuclear weapons, an Israeli military strike to prevent this will be seriously considered."

Deputy Foreign Minister Ali Reza Sheikh Attar, who visited the Natanz plant last week, said that Iran was preparing to install even more centrifuges, though he did not offer a timeframe. "Right now, nearly 4,000 centrifuges are operating at Natanz," Attar told the state news agency IRNA. "Currently, 3,000 other centrifuges are being installed."

Meanwhile, the pan-Arabic Al Kuds al Arabi reported Friday that Iran had equipped Hizbullah with longer range missiles than those it possessed before the Second Lebanon War and had also improved the guerrilla group's targeting capabilities.