How to capture smart phone's mac address using Arduino?

I tend to build something which can recognize my phone's mac address for being able to light an LED. It will work like this, if i come across the wifi zone (which will be transmitted by the device i tend to build), it will capture my phone's mac address and check if it's my mac or not, if it is then the device will turn the LED on. Any idea, how will i get that done ?

Any idea, how will i get that done ?

There are a whole lot of features that you will need to investigate.

Does your phone even broadcast its mac address? If so, how? Frequency? Encrypted?

Does it only do that when it attempts to connect to a WiFi network? If so, is your device going to present as a WiFi network? What will you do when your phone connects? What will you do when other phones connect?

I don't think you are going to build a device that recognizes your phone as it passes by, without some help from your phone. Whether you are able to program your phone to cooperate in that venture, or not, is not something we can tell you. (Despite having suspicions.)

PaulS:
Despite having suspicions.

Hay Pauls, thank you very much for your deconstruction. It really helps. And one thing, I don't know whether i will be able to build it or not but it's just a thought that will keep me going. Thanks again :slight_smile: