Say hello to EFF's second, limited-edition, DEF CON membership t-shirt! Only 340 premium-level donors who attend this year's DEF CON 19 in Las Vegas will be able to get these new "ENCRYPTION SAVES" shirts, specially designed by Joe Alterio of the creative charity Robots & Monsters. The front is emblazoned with a mashup of the DEF CON and EFF logos in a subtle homage to our mutual support (as well as a shout-out to EFF's advocacy for remix culture and fair use). Under UV light, the orange, white and blue design on the shirt's back glows white with acid green bits of code. In complete darkness, a secret message is revealed, illuminating the plain text truth that strong encryption saves lives. Mouse over the image below to experience the glow-in-the-dark awesomeness.