We have readers that are key injected, and we are not sure if the key injected is the correct one. Any way we can verify which key is injected?


Step-by-step guide

  1. First, verify a data key is injected by sending the check Security Level command "52 7E" using the SecureMag USB Demo and ensure it's not on level 1 (which indicates there is no key injected)

  2. Then, you can send "52 51" command to get the KSN and check the KSI which is the first few bytes of the KSN to see if it's key for your payment processor


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