Search Engine Watch has spoken about beacons a lot in the past, but just in case you need a refresher, a beacon is a tiny device that can transmit a signal to any Bluetooth device in range – phones, fitness bracelets, headphones, smartwatches etc.
Usually this happens through an app (although Google in particular are taking steps to remove this friction and enable direct device communication), and before the privacy police wade in, it’s all completely opt-in.a
