If you have a decently modern phone you can get the smoothtrack app on your phone for $10. You can use that as an input for opentrack. I've been using that for a while, and it seems to be working well. Apparently you can also use a regular webcam in opentrack using aitrack, but I haven't personally used it so I can't vouch for how well it works. Source: about 1 year ago

For the last 6 months, I’ve been using a app on my phone for head tracking. It’s called https://smoothtrack.app/ and it’s only $9.99USD links to any front facing camera and works very well. I originally bought it because the trackIR pro was on backorder but since using it, I feel no need to change. I have no affiliation with this app.I’m just very impressed by how simple and effective it is. Source: about 1 year ago

Yeah, it works with opentrack. Pretty seamless. You do have to download some connection software to get them to talk, but that’s all covered on the SmoothTrack site. Source: about 1 year ago

Smoothtrack costs $9.99 and only needs a smartphone. Surprisingly reliable and consistent if set up properly. Source: over 1 year ago

The app's webpage, scroll down to the setup section for the usage guide. Source: over 1 year ago

I met this need because I am working on browser notifications for Inspector using Pusher/Beams. But Beams requires that the application be necessarily served over HTTPS. It is required also in the local development environment. - Source: dev.to / about 2 years ago

Lots of options, but Laravel already integrates with Pusher for websockets; https://pusher.com/beams is their push notification system, and it's fairly easy to add to Laravel. Source: over 2 years ago

Pusher.com — Free, unlimited push notifications for 2000 monthly active users. A single API for iOS and Android devices. - Source: dev.to / almost 3 years ago