Radon for Android uses ultrasound to quickly share links between devices

If you constantly find yourself recommending YouTube videos or apps to your buddies, you need a tool to share those links quickly.

Radon for Android does just that. Install it and you’ll find the app listed in the share options when you want to beam across a link or selected text, whether that’s from your browser or Reddit client.

To receive your links, others only need to have the app installed and be within close proximity – there’s no pairing involved and you don’t need to be on the same Wi-Fi network. You can send the same link to multiple devices at once, so long as they have the app running.

Radon uses a combination of Bluetooth, Wi-Fi and near-ultrasonic audio, found in Google’s Nearby API to make this happen. While it can’t handle files like photos and video, it’s great for quickly sharing small amounts of data, particularly when used with a bunch of people at the same time. – and it’s faster than messaging.

via Lifehacker