Dash Cam on Your Phone
An online dash cam that runs in the phone’s browser: it records the road in a loop, keeps only the last minutes and saves the moment of a collision as a separate video. Date, time, GPS speed and coordinates are burned into the picture, and the trip is kept as a GPX track. Nothing to install — the page itself reads the camera, the location and the motion sensor.
How to use a phone as a dash cam
In a windshield holder, camera clear of the tinted strip and inside the wiper area. Recording and GPS drain the battery within an hour or two.
Quality, how many minutes to keep and how many seconds before and after a moment to save — the page checks that the space is there.
The browser asks for the camera, the location and, on an iPhone, the motion sensor. Keep the page on screen; dim it instead of locking the phone.
Press “Save moment” or let the G-sensor do it. Each moment appears in the list with a thumbnail, speed and a map link, ready to download.
Record the road with your phone and keep the moments that matter
⚠️ A web page records only while it is on screen. If you lock the phone or switch to another app, the browser turns the camera off and recording stops — what was already recorded is kept. To save battery, use “Dim screen” instead of locking.
The camera is off. Press “Start recording” — the browser will ask for the camera and your location.
The phone is upright: turn it sideways so the whole road fits in the frame.
🔁 Loop recording
The loop keeps only the last minutes and overwrites the oldest ones. To keep a stretch for good, save it as a file or press “Save moment” while driving.
💥 Saved moments
No saved moments yet. They appear here after an impact or after you press “Save moment”.
This browser cannot write the recording to the phone’s storage, so the loop and saved moments live in memory while the page is open, and the loop is kept short. Download the moments you need before closing the page.
🕘 Previous recording
One previous loop is kept until the next recording ends: if something important happened there, save it now.
🛣️ Trip
The track is written while recording is on and continues after a pause. Saved moments are marked on it as waypoints.
⚙️ Recording settings
720p reads plates at a short distance and keeps the phone cooler; 1080p is sharper but heats the phone and fills storage twice as fast.
Older footage is overwritten, like on a memory card. Saved moments are separate files and are never overwritten.
A saved moment is one video: this many seconds before the impact or the button press and this many after it. A second impact during that time extends the same file.
The bar shows what the sensor feels right now, the peak — the strongest jolt of the last 10 seconds. A hard brake is about 0.8 g; set the trigger above the bumps on your road.
