http://www.chessgames.com/perl/chessplayer?pid=52948
Is this Magnus Carlsen?

If you've joined the group, that's the right place to ask whether there's a device to detect cheating in bullet games.

in 1 min chess? naw.
pepole say its possible to cheat in 1 minute chess
It's possible using software - there are some YouTube videos out there demonstrating it. It's also easy to detect, and anyone using such software generally gets banned in the next 24 hours.
24 hours? really?
I checked on two accounts playing each other in a Youtube video someone posted hereabouts once, and it was between 24 and 48 hours - I wouldn't recommend testing it out yourself
People post videos of themselves cheating??? (See what I did there?)
By the way, the cheating detection here is really great. Once, I was playing an account named "I_AM_A_CHEATER" and he was banned within 15 seconds.

Has anyone actually compared the moves with chess engine responses?
I'm pretty sure ches.com would have done that in a great detail.

Another GM (Oleksandr_Bortnyk) crossed 3000 today.
I never cheat in ANY time control. Lol I won't test it you don't xD. btw is there a device which detects cheats in bullet?
Chess.com doesn't reveal the methods its uses for cheat detection, but you can find out more about the principles of cheat detection in the dedicated club at https://www.chess.com/club/cheating-forum
I have already join the group,
Right, we have joined the group