One time I did test the HFA mini necklace, I had a meeting in a high-rise and didn’t know what floor is was on. I got on the elevator and didn’t take any floors the other people who got on with me did pick their floors. Here is the funny part,the first floor the elevator arrived to was the 8th floor when the door opened I saw someone that was scheduled to be in the meeting with me. I yelled out the elevator and ask where is the meeting? he responded this floors main conference room. I’ve never had a meeting on this floor the ten years with this agency. when I stepped off the elevator I turned to my coworker and said, see that’s how this HFA mini works. However, I was surprised.