Oh... well you can get thermochromic 'mood' clothing now, or even spray on coatings for fabrics. That would serve the same purpose.
I remember ThinkGeek also used to sell a tiny necklace with an 'ON' symbol that lit up and pulsed in time to your heart beat.
Come to think of it, with a wifi connection, you can have something similar, except that it pulses in time to your Significant Other's heart beat. Which would be romantic, or possibly grounds for divorce if they get caught with an unexplained racing heart rate... or even tragic if it stops.
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Oh... well you can get thermochromic 'mood' clothing now, or even spray on coatings for fabrics. That would serve the same purpose.
I remember ThinkGeek also used to sell a tiny necklace with an 'ON' symbol that lit up and pulsed in time to your heart beat.
Come to think of it, with a wifi connection, you can have something similar, except that it pulses in time to your Significant Other's heart beat. Which would be romantic, or possibly grounds for divorce if they get caught with an unexplained racing heart rate... or even tragic if it stops.