Difference between QR code and Data Matrix

QR code and Data Matrix are known as 2D barcodes. Data Matrix was developed by German inventor Klein Rolf Dieter and Rohde Ulrich in year 1989 and patented back in year 1992. QR code was developed in year 1994. Data Matrix was largely used by many organizations and...

What is RFID

What is RFID? RFID stands for Radio Frequency Identification. It uses radio waves to identify any object which has unique identification no. which get transmitted when it comes in contact of the RFID antenna.The RFID reader then reads the data sent by RFID tag. Why...