Drawn on a piece of paper, the spokesman said it was "full of the pop art motifs we have now come to recognise, including Warhol's signature bright red lips, made using lipstick, and a typically pop art blocked background, coloured with green and orange felt-tip pen".

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The receiver can be clipped to the edge of standard paper or sketchbooks and the position can be adjusted for left or right handed users to provide the receiver with an uninterrupted line of sight with the pen tip.

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If you give up on tablet writing, you can replace the tip to convert the pen to an old-fashioned roller ball.

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The newly upgraded active pen includes an innovative tip design that provides the high accuracy required for flawless handwriting recognition together with unparalleled palm rejection technology that enables a natural pen-on-paper handwriting experience.

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Most are simple designs, essentially a pen with a rubber tip that mimics the conductive property and shape of a fingertip. (Steer clear of styluses with fine, hard plastic tips, which are designed for older gadgets like the PalmPilot and won't work with today's touch screens).

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Finally, I took the pen, put the felt tip on the skin somewhere, and looked up at him to see if I could make out a glimmer of approval or disapproval.

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The cap of this pen doubles as a stylus tip, giving users the option to write with ink on paper in the iNotebook device and then quickly switch over to writing with a stylus in the app.

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Also adding to the nostalgia of using an old-fashioned number two is the larger rubber tip, slightly bigger diameter (8mm) and increased length of the pen itself.

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