01
Share a status
A person communicates whether they need assistance or are safe without major complications.
Active development for compatible phones
Stay connected when it matters most.
SignalAlive is being developed to help nearby compatible devices exchange, preserve, and carry essential emergency information when traditional communication is limited or unavailable.
09:41
STATUS SHAREDAlive — needs help
Waiting for another connection…
09:41
STATUS RECEIVEDMessage preserved
Direct nearby exchange
NO INTERNET REQUIRED
NEARBY CONNECTION
01 Another communication path
02 Temporary device connections
03 Every signal represents a person
The signal journey
A message can move without one continuous connection.
SignalAlive explores store-and-forward communication: a participating phone may receive essential status information, preserve it, and carry it forward when another compatible device becomes available.
02
Connect nearby
Compatible phones may communicate directly when they come within range.
03
Preserve and carry
If no onward connection is available, the message may remain stored for a later connection.
04
Extend the opportunity
Changing device connections may create another possible path for the information to continue moving.
What makes it different
Designed for changing conditions.
Direct nearby communication
Not every exchange needs to pass through cellular service or the internet.
Message preservation
Information may wait safely between temporary connections instead of needing one uninterrupted path.
Controlled forwarding
The system is being developed to manage retries, duplicates, reconnection, and message lifetime as information moves.
Development status
Built with purpose. Developed with care.
SignalAlive is not yet available for public emergency use. The mobile prototype is in active development and controlled physical-device testing.
The project advances through staged implementation: build a foundation, test it on real devices, learn from the results, and expand only when the behavior is reliable enough.
Ask about developmentFoundation builtDirect phone communicationNearby discovery, structured status messages, acknowledgments, persistent queues, and duplicate protection.
Testing nowThree-device relayValidating that a status can move from an origin phone through an intermediate phone to a receiving phone.
Planned nextBroader validationMore devices, accessibility, battery optimization, privacy and security review, and field-simulation planning.
Why SignalAlive exists
“Every signal represents a person.”
SignalAlive began with a simple question: what if a person trapped after a disaster could continue sending a signal when normal communication was no longer available?
The project grew from the belief that a phone could provide another possible path for someone to remain connected, visible, and easier to find.
SignalAlive is intended to complement established emergency communication systems—not replace them.
Get involved
Help strengthen the project.
SignalAlive welcomes thoughtful conversations with people and organizations interested in responsible emergency communication.
Donate to the project
Financial contributions can help support responsible development, device testing, accessibility, and future field validation.
Ask about donatingFuture testing
Express interest in future controlled testing opportunities. Interest does not guarantee selection or immediate access.
Share testing interestContribute expertise
Bring experience in technology, accessibility, privacy, security, research, or emergency management.
Contribute expertiseExplore a partnership
Start a conversation about research, preparedness, testing, education, or collaboration.
Explore a partnershipEssential questions
Clear answers, without overpromising.
01Does SignalAlive work without internet?+
It is being designed so compatible nearby devices can exchange essential information directly when internet or cellular service is unavailable. Performance still depends on compatibility, permissions, distance, battery, obstacles, operating-system behavior, and other participating devices.
02How can a message move beyond one phone?+
A participating device may receive a message, preserve it, and carry it forward when it later connects with another compatible device. This creates a temporary path rather than requiring one continuous connection.
03Does SignalAlive replace emergency services?+
No. SignalAlive is intended to complement established emergency systems. Contact local emergency services whenever they are available.
04Is SignalAlive available now?+
No. It is currently in active development and controlled testing. Public testing will begin only when reliability, privacy, security, and usability reach an appropriate level.
05Will it work on every phone?+
SignalAlive is being designed for broad compatibility across mobile devices. Actual support will depend on hardware capabilities, operating-system restrictions, permissions, and validation on each type of phone.
Stay connected to the mission
Explore the project or help make it possible.
Visit the website for current progress, or contact SignalAlive to test, contribute expertise, collaborate, or support responsible development.
hello@signalalive.com