-The SPIKEY is the secret for getting a SPIMAGE. SPIKEY is the numerical code which a user must enter to retrieve data hidden in the SPIMAGE.
-The SPIKEY is unique and only one SPIKEY can be used for only one SPIMAGE.
-A SPIKEY is issued to a person who is supposed to get SPIMAGE which hides data in it.
-Any kind of data can be hidden, from a simple text ...