[On element] in settings, security and privacy, you can know where you're logged in. All clients I know, use or used have a "Public Name", then you can easily know which client it is, and if you can remove it safely. Carbon just uses the ID. Please add the public name to help users to manage their matrix clients.
FYI, the intended way for a client to set this is at login, with the initial_device_display_name body parameter to POST /_matrix/client/r0/login. Luckily Element and FluffyChat expose a UI to rename your devices as well.