“…Several interactive floor systems exist for indoor purposes, with mainly LEDs or projections as means of feedback, and using either RFID [117], pressure sensors [257,283], or computer vision to track people [79,102,156]. Several target groups have participated in studies with these floors, including children [281], families [117], students [156,256,260], intellectually disabled people [283], rehabilitants [257], and hearing impaired people [102].…”