Installing drawbridge

One of two paths, depending on whether your device's setup wizard offers a QR scanner.

This is still in early alpha testing!!

Provisioning has not yet been confirmed working on a real phone. Expect it to fail, and do not use a device you depend on.

The standard way: QR code

1
Start from a fresh device, or do a factory reset. Back up your data first, since a reset wipes it.
2
On the welcome screen, tap the same spot 6 times to reveal a hidden QR scanner.
3
Scan the drawbridge QR code.
4
Wait for setup to finish — the device downloads, verifies and installs everything on its own.

The drawbridge provisioning QR code. — Scan this code during set-up.

If the QR code doesn't work

Some devices ship a setup wizard without the six-tap gesture, or skip the QR scanner entirely. There is a second way in, over USB, that works regardless.

1
Continue through setup, but don't sign in to any account — skip that step. This matters: the installer needs a device with no account yet configured.
2
Enable Developer Options (tap the build number in Settings → About phone several times) and turn on USB debugging.
3
Connect your device to a computer with a USB cable, and use the installer below.
4
Wait for setup to finish.

Browser-based installer — coming soon

A page here will let you install drawbridge straight from a Chromium-based browser (Chrome, Edge) over USB — no separate software to install. It isn't ready yet.

Install over USB — coming soon

In the meantime, technically comfortable users can grant drawbridge the same access using Android's own adb developer tool from a computer, on a device with no account signed in yet.

After setup

5
Open the drawbridge app and activate it.
6
Write down the deactivation code shown once — or don't, if you want the protection to stay on for good.

Read the Q&A for what's blocked and why, or see the full sourced breakdown.