Software like Synapse X (historical) or current alternatives like Hydrogen or Fluxus to inject the code into the Roblox client.
Users can typically toggle the control on or off using specific keys (e.g., P or Q ). FE Controllable Alt Script
Using such scripts is a direct violation of the Roblox Terms of Use . Anti-cheat systems like Hyperion (Byfron) actively target script injectors. Software like Synapse X (historical) or current alternatives
The is a specialized Lua script designed for the Roblox platform. It allows a player to control a secondary account (an "alt") directly from their main account session, synchronized through Filtering Enabled (FE) environments. Technical Overview FE Controllable Alt Script