BLE, FTDI and use of terminal to see what I write from the phone

Dear all, I’m looking for something simply simple I saw days ago, but now I’m not able to locate now, I saw a really small project with only ESP01, a FTDI  communications adapter and the computer as a terminal via USB, there was a really short  program on ESP01, and the whole that this system makes is to show on the computer screen what we write on the phone, and to see on the screen phone what we write on the computer keyboard