Some devices are not accessible through the USB API (see the Caveats section below for details). Chrome lets you connect a website to your Bluetooth and USB devices Connect a website to a Bluetooth or USB device. For example, if you have a Bluetooth-enabled heart monitor, you can let a website connect to it. Then, the page can record and show information about the monitor.
When to give access to your device
Only give device access to a trusted site. If you pair a website with your device, the site can get all the information on the device and can even reprogram it.
Pair a webpage in Chrome with your device
- Connect your devices.
- Bluetooth device: On your computer or phone, make sure Bluetooth is turned on. On the Bluetooth device, turn on “discoverable” mode.
- USB device: Connect your devices using a USB cable.
- In Chrome, open a webpage that can connect to your device.
- Click or tap the page. You’ll be asked to add a device.
- Choose a device from the list.
- Choose Pair or Connect.
Troubleshoot Bluetooth pairing problems
On Computer Connect a website to a Bluetooth or USB device
If the site can’t find your device, click Search again.
If the site can’t find your device, make sure that Bluetooth is turned on for your computer:
When both devices have Bluetooth turned on, click Re-scan.
Tip: If you’re on a Windows computer and still can’t connect to Bluetooth, you may need to change your privacy settings to allow apps to control device radios. To learn more about system settings, go to the Microsoft help center.
Remove devices connected with Chrome
Bluetooth devices: To remove a website’s access to your Bluetooth devices, at the top left, tap Reload .
USB devices: To remove a website’s access to your USB devices, follow these steps:
- To the left of the web address, click Lock
.
- Next to the USB device, click Remove
.
On Android Connect a website to a Bluetooth or USB device
If the site can’t find your device, make sure that Bluetooth is turned on for your Android device.
When both devices have Bluetooth turned on, click Re-scan.
Remove devices connected with Chrome
Bluetooth devices: To remove a website’s access to your Bluetooth devices, To the right of the address bar, tap More 
.
USB devices: To remove a website’s access to your USB devices, follow these steps:
- To the left of the web address, tap Lock
- Next to the USB device, tap Remove
On iPhone & iPad
If the site can’t find your device, make sure that Bluetooth is turned on for your iPhone or iPad.
When both devices have Bluetooth turned on, click Re-scan.
Remove devices connected with Chrome
Bluetooth devices: To remove a website’s access to your Bluetooth devices, tap More 
