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					Originally Posted by  sadievan
					 
				 
				Not sure.  They were looking for a model number but couldn't find one.  I thought she said they entered the serial #.  Maybe just for their records.  Or maybe they send them back to Amazon.  Not sure. 
 
Carol 
			
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 They check the serial number against a list of devices that have been deregistered. Amazon, BN, and Sony all 
deregister ereaders that have been reported lost or stolen.  
For those interested in learning how to report a device lost or stolen, or how to deregister it oneself, see: Lauren Indvik. (October 20, 2011). "What to Do if Your Ereader is Lost Or Stolen". 
Mashable.