This simple solution to smartphone addiction is now used in over 600 U.S. schools

A company, Yondr, whose small, gray neoprene pouches swallow phones and lock them away from the fingers and eyes of their addicted owners.

https://www.washingtonpost.com/news/inspired-life/wp/2018/02/05/this-millennial-discovered-a-surprisingly-simple-solution-to-smartphone-addiction-schools-love-it/?utm_term=.096e0201acc3