For 40+ yrs, evidence with adults (https://www.researchgate.net/publication/247745555_Informational_Versus_Controlling_Verbal_Rewards) and kids (https://promathmedia.wordpress.com/wp-content/uploads/2013/02/5-3-turning-play-into-work.pdf) alike has shown that when we're monitored, especially if the surveillance is perceived as controlling, we tend to lose interest in whatever we're doing. Consider the implications for today's high-tech classrooms and workplaces.