Stock Android blocks apps and desktops from capturing the screen and injecting touches unless:
- USB debugging / wireless debugging is enabled and the computer is trusted, or
- A phone app is granted MediaProjection (screen capture) by the user.
fiver uses the official adb + scrcpy path. That needs debugging enabled
once. After you tap Allow, daily use is just fiver --start.
- Settings -> About phone
- Tap Build number seven times
- Developer options -> enable USB debugging
fiver --start- Unlock phone, plug a data USB cable, tap Allow
Also enable USB debugging (Security settings) or input may not work.
Accept the RSA fingerprint dialog. Revoke authorizations if stuck.
Enable any extra “USB debugging security” toggles. Keep the screen unlocked for the first session.
fiver --setup-wifi
Then unplug if phone and PC share Wi-Fi or a VPN.