Move
Move it through the air
Robot arms follow your hand, from the phone’s own sensors. Real arms are experimental.
Try the robot arms →Open source · no app · no account
Your phone is the controller.
Robots, drones, games, music and your computer, with friends. Scan and play.
- Open a screen
- Scan or type its code
- Move your phone
One phone, every controller
It becomes whatever the screen needs.
Play
Play, four at once
Four phones, four players. With Link, any browser game that reads the Gamepad API gets a gamepad. Tested in Chrome, Edge, Brave and Vivaldi. See the limits.
Play the arena →Together
Build it together
One invite. Everyone takes a part of the scene, in their own colour.
Share a scene →Computer
Run your computer
On Windows, a trackpad and keys for whatever is in front. It takes two installs: Link and Desktop.
Get Link and Desktop →Open source
Make it yours.
Build with it
One script and one tag let a web page take a phone as its controller. This page does, with the same SDK.
<script type="module"
src="https://obpal.blackboxes.net/embed.js"></script>
<obpal-remote app="My scene" seats="4"
modes="face.trackpad face.wii"></obpal-remote>Your own controller
Build a controller profile, check it, and add it to the catalogue.
Build a profile Browse the catalogue →For AI agents
Plain files an agent can read and act on.
- llms.txtwhat ob.Pal is and how to use it
- catalogue.jsonevery utility, route and profile
- profile.schema.jsoncheck a profile before proposing it
Questions about ob.Pal
How do I pair my phone with ob.Pal?
Open a sim or the viewer on a screen, then scan its QR code with your phone or type its short code. The controller opens in your phone browser.
What do I need to use ob.Pal?
A phone with a browser and a second screen for the viewer or sims. The phone needs no app or account. ob.Pal Link is an optional browser extension; ob.Pal Desktop is an optional Windows helper.
How does ob.Pal handle privacy?
The service introduces paired devices. Control traffic is encrypted over WebRTC, and ob.Pal requires no account and uses no analytics.
The controller is already in your hand.
Open the viewer on any screen and scan its code.