Wearable tech is staging a vanishing act. That's not to say that there you can't find any new products here at CES in Las Vegas.
In fact, the show floor is packed with me-too fitness tracking bracelets, cut-price touchscreen smart-watches and strap-on heart rate monitors.
But a select number of exhibitors is attempting to sell products that do not flag the fact the wearer is sporting a gadget.
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