unscannable

English

Etymology

From un- +‎ scannable.

Adjective

unscannable (not comparable)

  1. That cannot be scanned.
    • 1994 July 14, “Greenbacks to Get High-Tech Makeover”, in The New York Times[1]:
      There is no prototype for the new bills, but Treasury officials said the final design work on the portrait adjustment, matching watermark security threads and unscannable threads had been authorized by Treasury Secretary Lloyd Bentsen.