The system 1, wherein {HEAD ~ the challenge response server computer} comprises a device information module configured to obtain information on a device used by {TAIL ~ the consumer} to conduct the transaction 
The system 1 , wherein { HEAD ~ the challenge response server computer } comprises a device information module configured to obtain information on a device used by { TAIL ~ the consumer } to conduct the transaction
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH