The 'Physical' web, not to be confused with the 'dark' web, is an open approach to enable quick and seamless interactions with Physical objects and Locations.
The Physical Web enables you to see a list of URLs being broadcast by objects in the environment around you. Any objects can be embedded with Bluetooth Low Energy (BLE) beacon, which is a battery efficient device that broadcasts content over bluetooth. Beacons that support the 'Eddystone' protocol can broadcast URLs. Services on your device such as Google Chrome or 'Nearby' notifications can scan for and display these URLs after passing them.For more information checkout the Google PW Knowledge base.
Switch on your Bluetooth, you never know what you may find!