Some are due to faulty readers, some are problems with the auto-complete feature Transport for London (TfL) can turn on at busy stations like Covent Garden, or sometime it's plain old user error.

BBC: Paddington walk incurs ?4.60 erroneous Oyster charge

Which is to say, it's pretty plain-Jane, with a matte, scratch- and finger-print resistant gray back.

ENGADGET: Acer shows off next-gen Iconia Tab A210 and A110 at Computex, we go hands-on (video)

News Corp. and EchoStar may have a sea of acrimony between them, but it's business plain and simple that'll keep these two players apart.

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