He also said he had been told the bombs were detonated with a "garage door opener-type of device".

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Many retailers offered door buster-type deals throughout November.

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Mr Yates was questioned about the necessity for dawn raids and "beating down the door" in a case of this type, by Tory MP Charles Walker.

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Search knows how to target audiences and its job is to get the right type of people up to the door.

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The new version of WAP, or wireless application protocol - a standard that allows mobile devices to display Web-like information - is due out by January, and is expected to create a PC-type environment that could open the door to attacks.

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Forest fragmentation opens the door to invasive species such as the cowbird, a type of blackbird that normally prefers open land, said Bridget Stutchbury, a biologist at York University in Toronto who studies forest songbirds.

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