I spent some time this evening faffing around trying to make a Raspberry Pi turn into a device that could detect nearby iBeacons, filtered by signal strength to find the closest, to basically create a kind of iBeacon scanner that spat out the UUID, minor and major values.
Eventually, I gave up on the Raspberry Pi for various reasons, and moved to my Windows laptop, found a good library, a working example to build on and managed to create a scanner that outputs what you see below!
The details
Searching around, I came across https://github.com/tinygo-org/bluetooth, which included an example that got me scanning for Bluetooth devices right away.