CyberGus
Not Just a Member
In general these systems are of dubious value imho as they dont actually measure attention at all (which is a purely mental function) they measure physical posture and attempt to deduce attention from those measurements. I'm quite sure someone blankly staring into space straight ahead would be passed as "ok" by such as system whereas someone who is attentive but glancing around would be dinged.
Next step: Neuralink