Are QR codes and room codes secure?

What is Refl?

Refl lets you mirror your phone camera to a larger screen and practise while comparing yourself with reference video.

What is Mirror?

Mirror is the feature that shows your phone camera on another screen with low latency.

Mirror is delayed

Latency is usually lower on the same WiFi and higher across different networks.

What devices can I use with Refl?

The usual setup is a smartphone as the camera and a TV, PC, or supported TV app as the display.

Which browsers are supported?

Use the latest versions of Chrome, Edge, Safari, or Firefox for the best results.

Screen feels small on mobile browser

Landscape mode, hiding the toolbar, and launching from Home Screen usually gives you more space.

Do both devices need to be on the same WiFi?

Not strictly, but the same WiFi usually gives easier connections and lower latency.

Can I use Refl on a corporate or school network?

Sometimes, but managed networks often restrict P2P traffic or QR-based connection flows.

Can I connect while using a VPN?

Sometimes, but VPNs often make P2P connection and latency worse.

Cannot connect mirror

If connection fails, first check same-WiFi setup, rescan the QR code, and update the browser.

Video is choppy

Choppy video is usually caused by WiFi quality, device load, or a dark camera environment.

Screen is black

A black screen is usually caused by camera permissions, another app using the camera, or a locked device.

Does mirroring use mobile data?

Data usage is lower on the same WiFi and higher on mobile data or separate networks.

Is mirror video secure?

Mirror video is protected with WebRTC encryption and is not stored on Refl's servers.

Can I use Refl on public WiFi?

It may work, but it is usually not the best choice for either stability or security.

Cast feature vs HDMI connection

Choose HDMI for the lowest latency, or Refl cast for a cable-free setup.

When should I choose HDMI?

If you want the lowest possible latency, HDMI is usually the better choice.

When should I choose Refl cast?

If you want a fast wireless setup without cables, Refl cast is usually the better fit.

How is Refl different from normal screen sharing?

Refl is designed for practising while watching yourself, not mainly for meetings or slide sharing.