Seconds matter.
Real numbers from kidnappings, earthquakes, and falls. Unlocking a phone is not a plan when help needs to arrive now.
Missing person records entered in the US (2024)
FBI NCIC
Deaths in the Turkey–Syria earthquake (Feb 2023)
EM-DAT
US seniors who died from falls in 2023
CDC NCHS
Two futures.
Same moment. Different outcome.
8:43 PM
Alone on the trail. No signal.
Phone shows one bar — then nothing.
Press. Locate. Alert.
One button on your body. GPS and an SMS to everyone who needs to find you — no unlock, no app.
One button. Works in the dark.
Satellite GPS locks your position.
SMS with a Maps link to every contact.
Built in 24 hours. Designed for the field.
Arduino Uno Q at 5V, satellite GPS on a MOSFET switch, and a 10,000 mAh main power bank. One press triggers the buzzer, locks coordinates, and texts every contact with a Google Maps link — under 10 seconds.
Hardware at a glance
From the LifeTap hackathon package — exact specs.
Charge the 10,000 mAh main power bank via USB-C
Architecture & blueprints
┌─────────────────┐
│ 10000mAh │
│ MAIN POWER │
│ (5V OUTPUT) │
└────────┬────────┘
│
┌──────────────┼──────────────┐
│ │ │
┌─────────▼────────┐ │ ┌─────────▼────────┐
│ ARDUINO UNO Q │ │ │ TP4056 CHARGER │
│ (5V LOGIC) │ │ │ (RECHARGE BANK) │
└─────────┬────────┘ │ └──────────────────┘
│
┌─────────▼────────┐
│ GPS MODULE │
│ (VIA MOSFET) │
└──────────────────┘
│
┌────────────▼────────────┐
│ BUTTON & BUZZER │
│ (VIA TRANSISTOR) │
└─────────────────────────┘
GPS tracking
Real-time satellite positioning with GPS, GLONASS, and Galileo — 5 m rated, 3.2 m tested.
Twilio SMS
Instant alerts to emergency contacts with Google Maps links and situation details.
AI classification
ML classifies emergency type from button press patterns and context — 85%+ accuracy.
Web dashboard
Live device status, alert history, and location tracking for responders.
What's inside
- Arduino Uno QMain controller · 5V from main power · D4 button · D8 buzzer
- 10,000 mAh main powerPrimary 5V supply · USB-C charge · 8–12 hr active runtime
- GY-NEO6M GPSSatellite fix · UART · switched via IRLZ44N MOSFET · 5V VCC
- Emergency button + buzzer10KΩ pull-up · 0.1μF debounce · 2N2222 transistor · 95 dB piezo
- TP4056 charger module1A CC/CV · 25×18×3 mm · recharges the 10,000 mAh bank
- Status LEDsD12 green · D13 red · 330Ω current limit
How it connects
The 10,000 mAh bank is the main power source — 5V straight into the Arduino Uno Q. TP4056 handles recharging the bank while the Uno reads D4 for the button, fires the buzzer on D8 through a 2N2222, and wakes GPS via MOSFET when the alert sequence starts. Twilio sends SMS with a Google Maps link — no app on the recipient side.
Book a demo to see it liveThe text that finds you.
Coordinates and a Maps link. No app on their end.
Field tested: 3.2 m GPS avg · 7.3 s SMS delivery · 99.95% success rate
Sarah pressed her LifeTap.
37.8651° N, 119.5383° W
Open in Google Maps →
911 vs LifeTap.
Same emergency. One path leaves you guessing — the other sends your location in seconds.
Unlock phone, find app
One press
No auto location
GPS in every SMS
Minutes to hours
Under 10 seconds
$20–50/month
$80 one-time
Single 911 call
Alerts 3+ contacts at once
20× less accurate location
5m GPS · 3.2m tested
Minutes
Typical response delay
<10 sec
LifeTap dispatch time
Be first when it matters.
Shipping to waitlist first.