Well this could be embarrassing on the tube. The INITIMACY 2.0 collection is made of leather and "opaque smart e-foils" that change their transparency levels, depending on your heart rate.
An arty fashion project developed by Studio Roosegaarde, the electronic clothes simply sense the wearer's heart beat and make the foils more see through the harder your chest is pounding, which they say is a way of "exploring the relation between intimacy and technology."
And it's also a good way for tech blogs to legitimately use photos of ladies in skimpy dresses while pretending it's about serious science. [Gizmodo Australia]