Just now I was in jb cafe restaurant. There were 4 staffs and including my one associate (Pfizer vaccinated) having lunch and me, 6 of us. The cafe is closing soon as we were the only ones there. That area is pretty isolated.
I turn on the bluetooth to check for mac address and there were 5 unnamed mac addresses. It means 5 vaccinated and me (pureblood).
Then I saw my phone detect one more unnamed mac address and I thought what happen. I look around and one female customer just enter the cafe and sitting at a table behind us.
A true encounter that ur jab gives off bluetooth signal. I didn't screenshot it as I was too obessed with the sudden appearance of one more mac address when one new customer entered the cafe.
If the hp turn on by deafult, there would be the name of the phone shown. At the cafe in jb, my vaccinated associate actually turn off his phone and i have the unnamed Mac address of 5 ( him, including 4 staffs of the restaurants), not 6 as i am(unvaxxed) in the restaurant as well.