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Clarification on ESP32 MAC Address Uniqueness and Identification

Posted: Sat Mar 01, 2025 8:59 am
by Harshitha.R
Dear ESP-IDF Support Team,

I hope you are doing well.

We are currently working with ESP32 devices and using the 12-character hexadecimal MAC address assigned to each chip for identification purposes. At present, we are considering only the last six characters of the MAC address as the unique identifier. We would like to confirm if this is the correct approach.

Additionally, we would like to understand whether the first six characters of the MAC address remain the same for a certain batch of ESP32 chips produced. Could you provide clarity on how the MAC addresses are assigned and which specific characters within the MAC address are guaranteed to be unique across all ESP32 chips?

Your insights on this would be greatly appreciated.

Looking forward to your response