Just have to photograph them at higher wavelengths. 390-700nm is fine and all, but somewhere around 10nm or so should do the trick... Perhaps there could be a

Just have to photograph them at higher wavelengths. 390-700nm is fine and all, but somewhere around 10nm or so should do the trick... Perhaps there could be a market on SR for little pieces of x-ray sensitive photographic film. Customers could pay providers a slight premium to include the film in the shipment. If the customer discovers that the film was exposed, they know that they've fallen onto somebodies radar.