Competitive e-sports runs on stricter rules than online ranked play, and it is worth being clear about where hardware-ID tools do and do not belong.
Tournaments are a hard line
Official tournaments — run by organisers like ESL, BLAST or Riot — use LAN setups and hardware verification by referees. Changing your HWID to mask a past ban or hide cheat software at a tournament is a serious rules violation, and a tournament ban of that kind is not something a tool can or should undo. Competitive integrity matters, and HWIDChanger is not for getting around it.
Where hardware-ID tools are legitimate
Away from the tournament floor, your own PC is your own. Reasonable uses include privacy — not exposing your exact hardware identifiers — and regaining access to a personal account after a mistaken ban. Those are about controlling your own machine, not about gaining an unfair advantage.
The simple test
Ask whether a change affects only you and your own access, or whether it affects the fairness of a competition for everyone else. The first is your right as the owner of the hardware. The second is off-limits — and no honest tool should help with it.