1 of 7Image
Every Monday in July, @ZDNetUK_News will tweet a link to a wilfully obscure picture of some vintage technology. The first person to correctly identify the subject in a reply will win part of the Large Hadron Collider. It's a small part, admittedly, encased in a keyring, but a part nonetheless.
We kick off our Monday Twitter Photo Challenge with this portable device. Aimed at a particular and very distinctive market, it foreshadowed a whole bunch of ideas that are hot right now — but it didn't catch fire back then. What is it? Reply to @ZDNetUK_News on Twitter for a chance to win.