Remember that hugely ambitious "virtual fence" that the US Homeland Security department was so keen on blowing a few billion dollars on? Well, following a bunch of setbacks and delays in its development, it's now been determined to be too darn expensive and is being scrapped. That's not without splashing some cash, however, as it's estimated that a billion dollars has already been spent on installing sensor towers along a 53-mile stretch of the Arizona border with Mexico. The plan now is to redirect funds to more conve
