Flashlight & screen
Transmit short and long flashes, or high-contrast pulses on the display. A visible signal needs a clear line of sight and enough darkness to be seen.
Lubee Signal is in development. We’re exploring a way to send and receive Morse messages with a smartphone’s flashlight, screen, or speaker—when the usual ways to connect are out of reach.
An early-stage concept from Lubee Labs. Not available to download yet.
When mobile networks, internet, and Wi‑Fi are unavailable, a nearby person may still be within sight or hearing. Lubee Signal is being designed to help turn a phone into a simple Morse sender and receiver—using light or sound, with automatic and manual modes.
Transmit short and long flashes, or high-contrast pulses on the display. A visible signal needs a clear line of sight and enough darkness to be seen.
Send Morse as tones and practice listening for patterns. Sound can help when light is blocked, though walls, distance, and noise all matter.
Compose a message or use manual controls to tap it out. The concept includes automatic decoding to make incoming patterns easier to read.
Lubee Signal is planned to include a Morse tutorial and practice pages. Learn to recognize letters, build words, and send a clear signal—so the knowledge can stay with you even after the phone is out of power.
Start with dots, dashes, spacing, and a few essential patterns.
Tap a message by hand or listen and read incoming Morse.
Use steady timing and repeat a message so someone can catch it.
Keep practicing until the code is a skill, not just an app feature.
These dramatized scenes are imagined to show why resilient communication matters. They are not reports of real people or events, and Lubee Signal has not been tested or used in these situations.
Under a shelf of broken concrete, every shout is swallowed by dust. A pale pulse slips through a crack: three short flashes, a pause, then three more.
Outside, a neighbor spots the repeating light and alerts responders. In a real emergency, follow local guidance and use established emergency services whenever available.
The stairwell is dark. The river keeps climbing. From a high window, a phone screen blinks a message toward the rooftops across the street.
A simple signal might help someone nearby notice you. It cannot guarantee that a message will be seen, understood, or acted on.
After the blast, the streetlights are gone and the phones have no bars. From behind a fallen doorway comes a measured sequence of tones—again, and again.
The scene is fictional. In conflict zones, signaling can also reveal a person’s location or create risk. Use judgment and prioritize trusted safety instructions.
The battery icon turns red. Before the screen fades, the learner traces SOS once more in the air: three short, three long, three short.
The app is intended to teach a skill that outlasts the charge. Morse is not a replacement for emergency equipment, training, or rescue services.
All scenes above are fictional and dramatized. Lubee Signal is a concept in development; no performance or rescue outcome is promised.
Explore the current Send, Receive, and Learn screens from the Lubee Signal project.
Compose Morse, then choose flashlight, screen, or speaker.
Listen for tones automatically or enter dots and dashes by hand.
Study the alphabet, hear and flash patterns, and practice recognition.
These web previews are drawn from the current Android interface. The site keeps its existing charcoal, green, and lime color palette.
SOS is a familiar distress pattern: ··· ——— ···. The planned tutorial will help learners understand timing and spacing—not just press a button and hope.
Light and sound have limits. A signal may be missed, misunderstood, blocked, or unsafe to send. Keep your phone charged when possible and follow emergency responders’ instructions.
Lubee Signal is still in development. This page shares the idea; it is not an emergency service and the app is not yet available.