These services can prevent unnecessary exposure of paper documents that contain sensitive information.

FORBES: Are Online Banks Safe?

Mr Dewar is sage enough to know that as well, which is why he was happy privately to reassure Mr Salmond that there would be nothing in the white paper to prevent the Scottish parliament from, say, holding a referendum on independence if it wanted.

ECONOMIST: Launching devolution

And that, a blank piece of paper, is not going to prevent middle-class tax rates from going up.

WHITEHOUSE: Press Briefing

To prevent such incidents in the future, the paper has implemented additional procedures to screen all strips before publication.

WSJ: Best of the Web Today: See You in the Funny Papers

When Haney meets Woods at his Florida home after his tabloid meltdown, Haney notices the rooms are oddly dark butcher paper has been placed over the windows, to prevent paparazzi on boats from taking photographs of Woods inside.

WSJ: The Masters: Tiger Woods and His Conspirators

The technique could be used to prevent fraud as well as provide a new meaning to the term 'paper trail'.

BBC: US engineers develop smart RFID-enabled paper

Some of the more pessimistic commentators see the recent credit excesses as the inevitable consequence of a system based on paper money and call for the return of the gold standard to prevent future crises.

ECONOMIST: Central banks and the bullion price

"When we look at the costs of the research and development that went into these improvements, we find that funding agricultural research ranks among the cheapest ways to prevent greenhouse gas emissions, " according to Steven Davis, a co-author of the paper.

FORBES: Magazine Article

While conceding that Spain "cannot control what Germany does or force the Opec hawks to cut petrol prices", the paper points out that the government "could at least put in place the means to prevent our inflation surge from turning into a vicious circle of stagnation and unemployment".

BBC: European press review