If you’ve ever had trouble identifying different denominations when digging through your wallet in the dark (or under other circumstances when you might find yourself visually challenged), Jaesik Heo’s concept for luminous paper money may just, er, fit the bill. Of course, the telltale glow could also alert anybody else in the vicinity to the presence of big bills in your wallet. Maybe Heo’s next version should let you customize your colors, so that your big pile of Benjies (or Sejongs, in Heo’s example) would look like a pitiful stack of singles. [More]
