Like the original "I Love You, " this variant spreads itself via Microsoft's Outlook software and can delete image files from a user's computer.

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Compositing results can be viewed in real time on the camera's LCD monitor, and there is a one-step Undo command that allows photographers to delete an image and try again if desired.

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Moments later I was chased by a security man and ordered to delete the offending image from my camera -- he even stood over me while I did as I was told at my laptop like a chastened schoolboy.

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