"I've noticed that the presence of the pockets make them comply. I haven't required that they put them in, I just said that if I see them out, they will go there. I've only had one infraction so far. I tell them that it goes "in your pocket or my pocket (wall holder). They get it. They've just been looking for a reason to conform. Kids..lol."
"I gave tickets every day for the first 4 days to every kid who put their phones and chromebooks away without being reminded. Then I gave tickets on random days by pulling phones out of my box. Next week I will start "charging" tickets whenever I find phones or chromebooks out. It takes a while to build new habits, so I'm trying to use intermittent reinforcement to help."
I know of one teacher who taught students to recognize appropriate times to use technology by establishing a Red/Yellow/Green "zone" in the classroom. Red = no devices. Yellow = you may look briefly. Green = now is an acceptable time to use technology freely.