If something goes wrong, go to OS bluetooth settings and unpair camera there! Then refresh page and start from step 1.

Step 1: start bluetooth pairing on the camera

Menu → wireless settings → bluetooth → pairing

Step 2: pair camera in OS bluetooth settings

Regular pairing from Web Buetooth is not supported but it is required by the camera.

Step 3: create Web Bluetooth connection

connect

Step 4: handshake

first time handshake after pairing or have previously handshaken (seems only required for Wi-Fi AP)

Step 5: some actions

Shooting

Switch to shooting mode
Press shutter button Hold shutter button for 2s
Start video recording Stop video recording

Playback

Switch to playback mode

	Up
Left	Mid	Right
	Down

Zoom in Zoom out
Start slideshow Stop slideshow / exit zoom

WiFi

start WiFi Access Point (will disconnect bluetooth)

Power

Suspend Wake up
Turn on display which was turned off by power saving

Device info

Get Doesn't actually require a handshake.