Which new feature did HP introduce on its security labels in late 2011?
A.
Quick Response (QR) code
B.
OK and ! that move in opposite direction when the box is tilted front to back
C.
invisible ink to add another layer of security
D.
RFID features to scan large batches at a time
Explanation:
Reference: http://www.aridvalok.com/articles/how-to-identify-original-hp-toner.html