Related Clues:

• Make hard to read
• Put into code
• Create a cryptogram
• Use a key, perhaps
• Code
• Convert ordinary language into code
• Convert into code
• Convert to coded form
• After nice piano playing woman's put Enigma variations on?
• Make it difficult to work out for prince freaking out over hotel key
• Byzantine hen price code
• Code for that man in Pincer Movement
• Prince confused about His Excellency’s code
• Timeless, The Prince could reveal code
• Convert to a cryptograph