Rfid reader shows (Authentication failed() : communication error) when scanning card : I am working on a project. In the project I am using arduino uno atmega328p board to take input from rfid reader(MFRC522). With reader I got Keychain tag and identity_card tag. The library I am using is MFRC522. I downloaded it from github. In that I tried dumpinfo example code to scan card. Reader works fine with default cards. (Keychain and identity_card tag). Now the problem is When I scan my college identity card it shows an error "Authentication failed () :communication error". please help me. Thanks in advance 