as it's only scanning and dont need to make any connection to the device thats fine for me

i have them on my keychain, and when i arrive with the car on the parking the house already sees i'm comming home, and turning on the lights when it's dark

i also had issues in the beginning, RPI was indeed in behind a door (ook meterkast)XanderF wrote:30 to 40 meters would be ideal, but I'm not even getting half of that. Maybe 6, 7 meters. I've tried a LogiLink BT0015 and Conceptronic 1004108 CBT40NANO. Both 100 meter LE bluetooth 4.0 usb dongles. The problem could be the pi's location. It's in the hallway, behind a door (meterkast) surrounded by cables and iron.
Are you getting 30 to 40 meters with one pi, or multiple located throughout the house?