handkey not accepting hand scan

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A biometric F-Series hand reader usually comes with standard user memory.  When a user is added that exceeds that user memory size, there is no room left to store that user and that user template c...
On a biometric F-Series or E-Series hand reader, the desired row (r) value and column (c) value should each be zero (0), plus or minus 2.  The desired exposure (e) value sh...