Before receiving the binay VIDEO

Before receiving the binay VIDEO 

How to get the 33-digit hash of your mac

1. Boot with Option key held to display the boot menu's firmware password prompt.
2. Press Control-Option-Command-Shift-S to reveal a 33-digit hash (mixed letters and numbers) that contains an identifier for your specific motherboard and the Atmel chip used for your system. In this hash, the first 17 digits are an identifier for the system's motherboard, and the last 16 digits are a hash for the password.

This Number is used to compile a signed binary unique to each apple computers.