This project lets you display a web page, some text, or turn off the display on a remote iPhone / iPad device. For example, you can stick an iPad on a bulletin board, turn on Guided Access, plug it in, and use it as an advertisement screen! The devices don't have to be next to each other; they just need to be connected to the Internet.
Check out the demo video!
This project uses Socket.IO to communicate between the display device, the control device, and the central server. The server is written in Bun and hosted on Hack Club's Nest. The clients are written in Swift (duh).