Tezcatl streams your phone screen — or a separate virtual screen the app creates — over your local network so you can view it in your vehicle's built-in web browser. No cable, no dongle, and no account. It runs on your phone's mobile hotspot.

■ How it works
1. Turn on your phone's mobile hotspot in the car.
2. Start mirroring in Tezcatl.
3. Connect your vehicle to the phone's hotspot Wi-Fi.
4. Open the vehicle browser and enter the address shown in the app.

■ Three display modes
• Phone screen — shows your phone screen as is. Simplest to set up.
• Dashboard — shows your phone screen alongside a clock, app shortcuts, and a stop button on the vehicle display.
• Virtual screen — creates a screen separate from your phone. A screen saver runs on the phone while mirroring, so you can keep using the phone independently. This mode requires wireless debugging pairing in developer options.

■ Remote touch (Accessibility Service)
Tezcatl uses the Android accessibility service to forward touch input from the vehicle browser as gestures on your phone. It does not read or collect screen content, does not store or share accessibility events, and never acts on your behalf. You can turn it on or off yourself in Android accessibility settings, and remote touch does not work while it is off.

■ Fixed addresses (VpnService)
Tezcatl uses Android VpnService to create a stable local address, so you can connect with the same IP and domain even when the hotspot address changes. It does not connect to a remote VPN server, does not inspect or redirect traffic for advertising or monetization, and collects no data through this feature. It stops when mirroring stops, and with the feature off you can still connect using the hotspot IP address.

■ More features
• H.264 / H.265 / MJPEG encoding with resolution, frame rate, and quality settings
• Start automatically when a chosen Bluetooth device connects, and stop when it disconnects
• Adjust screen brightness and timeout while mirroring, then restore your original settings
• Pin app shortcuts to the dashboard and virtual screen
• HTTPS connections supported

■ Requirements
• Android 8.1 or later
• A mobile hotspot on your phone, and a vehicle with a web browser
• Virtual screen mode requires developer options and wireless debugging pairing

■ Privacy and safety
Screen video and touch input travel only across the local network between your phone and your vehicle. Nothing is routed through or stored on the developer's servers. There are no accounts and no ads.

While mirroring is active, devices on the same local network can reach the displayed address without separate authentication. Use Tezcatl only on a network you trust, and stop mirroring when you do not need it.

Do not operate the screen or watch content unrelated to driving while you drive. Always follow applicable laws and safety rules.