Covert Communications

If you are looking to write a book or make a movie where the plot needs a novel strategy for an organization or cartel or individual (the sender) to transmit a covert coded assassination or terrorist instructions to another individual or organization (the receiver) consider using these:

Note: These are only ideas for transmission, the final formula for encoding and decoding can be made as thrilling and as genius as required. 

1. Sender manipulates the contents and sequence of the evening news. While everyone is simply watching the day’s news and breaking stories, the receiver is actually decoding the news for his instructions. The complexity of the communication can further be increased by leveraging graphics – pictures and video feed.
    
2. Sender is a tap dance choreographer. The receiver, in the audience, knows the performance to focus on. The performer tap dances his instruction in Morse code.
    
3. Sender records the instruction with amplified background music, slows it down by a factor. Uses it as background music to the famous Bellagio like water fountains. The receiver records the song, increases the speed by the same factor, isolates the message and the amplified background music and has his instructions.
    
4. Sender manipulates the stock exchange where the company equity price falls by a predetermine percentage. The receiver terminates the CEO. This is good for a corporate thriller.
    
5. Sender manipulates the lottery system. The winning number when decoded gives the details of the target.

Option 2 and 3 could be inspirations to smart phone apps.