The Glitchless was found by Manhattan

You can get the carpet without ID card , and you can use the glicth to speedrun https://www.speedrun.com/ice_scream_4/full_game#Grab_the_Carpet

Check the video and know it https://twitter.com/NiankunC/status/1528756266729885698?t=I9DmMZwE2_S6XCbDKR7yxw&s=19