You cannot prove it. Valve and Faceit see server side data nobody else ever will, and a public profile shows results, not what produced them. What you can do is read the numbers, because smurfing and cheating both leave a shape: reactions faster than the rank explains, a crosshair already on the enemy before the duel opens, elite mechanics on an account with forty games. None of that is evidence. All of it is a reason to look twice.
The numbers that give it away
- Time to damage: how long from seeing an enemy to landing a shot.
- Pre-aim angle: how far the crosshair sat from the enemy when the fight opened. A low figure means the aim was there before the target.
- Aim rating: pure mechanics, useful mostly for how badly it clashes with the rank.
- K/D and winrate: blunt, and the two a smurf inflates first.
- Matches analysed: decides what the other four are worth. Twenty matches prove nothing.
A thin history with a huge K/D reads as a smurf. Great mechanics across a thousand games reads as a good player.
What the Pulse trust check does
Pulse puts those stats on the Steam profile and folds the same five signals into one verdict, from Looks legit to Very suspicious, adjusted for sample size. It is computed locally in your browser from numbers already on screen: nothing is sent anywhere to be scored. When it flags someone it marks the tiles it reacted to and prints a short "Why" line in words, such as "instant reactions" or "pre-aimed crosshair", so you can see which figure moved it. A Faceit ban on the account outranks the arithmetic entirely and replaces the stats with a ban box. Recognised pro players are matched against a public list, and there the check steps aside: the verdict becomes Verified pro and the flags are cleared, because elite numbers are the expected result on those accounts.
What it is not
It is not an anticheat and it does not detect cheaters. It is arithmetic over public statistics, and its only honest claim is that a profile is worth a second look. A bad score can be a smurf, a cheater, or a good player with a thin history, and the check cannot tell you which. Report through the game, not off a webpage.
Pulse is free, needs no account, and asks for a single permission (storage). Get
it for
Chrome and Chromium browsers
or for
Firefox,
then open any Steam profile. The privacy policy covers what it stores.