What happens when you are on an airplane, in a remote location with no mobile signal, or working on a secure computer that has all internet and USB ports disabled? Animated Optical QR Streaming allows you to transfer documents, code, and notes directly from screen to camera without using the internet, Wi-Fi, cables, or Bluetooth.
What is an Animated Optical QR Stream?
A standard QR code can only hold a small amount of text. RunDrop's Optical QR technology takes your file, divides it into small, numbered visual chunks, and cycles through them at several frames per second on your display like a mini video. The receiving device uses its camera to watch the screen, captures each frame, and stitches the entire file back together in real-time.
100% Offline Capability
Works in airplane mode, underground basements, or areas with zero cellular reception. No data connection is required.
Zero Network Footprint
Nothing travels through the airwaves or network routers. Data moves purely through light from the sender's screen to the receiver's camera lens.
Built-In In-Browser Scanner
The receiver does not need a specialized app. They simply use RunDrop's built-in web camera scanner in their standard browser.
Self-Correcting Data Frames
If the camera misses a frame, the stream loops continuously until all pieces are captured, ensuring 100% complete and accurate file reconstruction.
Step-by-Step: How to Use Optical QR Streaming
Prepare Your Content
On the sending device, select a file or type your notes/code on the home page. Under share options, choose "Stream as Animated QR".
Launch the Visual Stream
Click share. An animated QR stream will begin cycling on your screen. You can adjust the stream speed or frame density depending on your screen size.
Open the Scanner on the Receiving Device
On the receiving phone, tablet, or laptop, open RunDrop and tap Receive > Scan QR Code. Allow camera access when asked by your browser.
Point and Capture
Point the camera at the sender's display. A live progress bar will fill up as each frame is recognized. Once it reaches 100%, the file is ready to save.
For the fastest transfer speeds, turn your sender screen brightness up and hold the camera steady about 6 to 10 inches away. Avoid intense room glare directly on the screen.
Frequently Asked Questions
What kind of files work best with Animated QR streams?
Text documents, source code, JSON files, configuration files, passwords, and small images work best because they reconstruct in just a few seconds.
Does this use any internet data?
No. The data transfer happens entirely through visible light between your screen and camera.
Can I use the front or back camera?
Yes. RunDrop's built-in scanner lets you switch between front and rear cameras easily on mobile devices.