An electronic device, such as a digital camera, includes sensors to acquire subject
data, such as an electro-optical image, as well as additional sensors to acquire
meta-data such as temperature, humidity, the identification of the subject data,
and the data and time. The electronic device further includes an image evaluator,
to determine the best steganographic method to use to combine the meta-data and
the subject data, and a steganographic engine, to combine the meta-data and the
subject data in an undetectable manner. In this way, meta-data can be associated
with the subject data when the subject data is acquired and in a manner that attaches
the meta-data and the subject data without requiring generating and maintaining
two, linked data sets.