Letter4U
Create cute, interactable, and so pretty digital gifts and love letters
Rider-to-passenger motorcycle intercom. No signal, no internet, no accounts.
The problem: talking on a moving bike means shouting through a helmet, or buying a pair of dedicated Bluetooth intercom headsets. Both phones are already in your pockets.
How it works: the two phones link directly over a local Wi-Fi network one of them creates, and carry continuous full-duplex voice between the helmets. The Android phone hosts the link, the iPhone joins it — pair once with a QR code and ride.
What makes it different: there is no mobile signal, no internet, no server, and no account. Audio never leaves the two phones. It keeps working in dead zones, on mountain roads, and across provincial highways where there is no coverage at all. Voice stays live with both phones stowed and both screens off.
Built with Expo and React Native, with a native link layer on both platforms.
Sign in to join the discussion.
Sign in to commentBased on 0 reviews
No comments yet. Start the discussion with something useful.