API Documentation
Everything you need to interact with AccessGrid via API.
HID 37 Bit (H10302)
Everything you need to understand HID 37 Bit (H10302)
Card format overview
A proprietary 37-bit card format used in access control systems, featuring a unique structure composed of 35-bit card number, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.
HID 37 Bit (H10302) format properties
35 bits. A unique serial number (0-34,359,738,367) for each card within that facility code.
Even Parity for Even parity over bits 1-18.
Odd Parity for Odd parity over bits 19-36.
Generate examples
Put in the values for this card format, we'll generate the results in a few different formats.