How to convert HID proprietary 37 Bit format (H10302) proximity card S/N read by ACTAtek device?

Solution

For example, the card number printed at the 37bit (H10302 format) HID proximity card is 11500003121

ACTAtek device's Event Logs remark field showed the card number is j0000055AE83E63.

( "j" is the pre-fix of HID prox. type of smart card followed by the hex ASCII characters of card number )

Conversion steps:

1.The 055AE83E63 is a 37 bit raw data

2.Convert HEX: 055AE83E63 to Binary should be as below.

0010101011010111010000011111001100011

Note:

Appending '0' in the leading to be a 37 bit.

3.The center 35bit are card number which should be as below.

01010101101011101000001111100110001

Note:

For HID proprietary 37 Bit format (H10302), the first and the last bit are parity.

4.Convert BIN to DEC

01010101101011101000001111100110001 =>11500003121

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