y useless to anybody without the key. 
This would seem to be a very good option – yet, as with all techniques, it has its 
strengths and weaknesses.  
 
The big plus is that the real data is available to anybody with the key – for example 
administration personnel might be able to see the personal details on their front end 
screens but no one else would have this capability. This “optional” visibility is also 
this techniques biggest weakness. The encryption password only needs to escape once 
and all of t