I.e. ‘bricking the phone’ for the students benefit
In: Engineering
Yes it would work well enough. However you have to factor in the cost of surrounding a classroom with metal mesh.
Yes. And you can get products made for this that gets put behind the wallpaper and as thin film over the windows. There are legitimate reasons to convert a room into a faraday cage and block cell phone signals and wifi signals. However this is generally not allowed in classrooms and other places with gatherings of large numbers of people. The main reason is that people need to be able to contact emergency services. And emergency responders needs to be able to stay in radio contact with each other while responding. Converting a classroom into a faraday cage can therefore be a violation of the fire codes and other laws. In general these faraday cage rooms are built due to requirements of national security or to reduce emissions from electronic engineering labs and similar places.
Put your phone inside the microwave
No don’t run the microwave, this isn’t one of those
With the microwave door closed try to call your phone
There’s your answer
btw if your phone can ring from inside a closed microwave it’s time for a new microwave
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Is it policy to allow students to have phones in the classroom? If it’s not, speak with your coworkers and boss to figure out how to maintain policy. If it is, I would petition to make a policy change. Smartphones are harming our youth in general, and especially in the classroom. Even if phones are against policy, I wouldn’t recommend a faraday cage. Wireless transmissions are highly regulated by most countries and blocking/jamming signals generally is a serious offense
When I taught in-person up until 2021, I demanded that cell phones be turned off and put away. Problem solved, at a cost to the university of $0.
That’s all well and good until there’s a school shooting and nobody can call for help.
Also, when I was in school all the teachers were using their phones too. They’d answer personal calls during class and step out in the hallway. Double-edged sword.
In theory, any space can be enclosed as a Faraday cage. You just need enough of a conducting material to block the EM waves.
In practice, though, you’d never do this because it would be expensive and time consuming, and would prevent various forms of nice, simple networking solutions. Can’t have a wireless network connection in the classroom if wireless signals can’t penetrate the walls. You *could* wire up physical connections, of course, but then if any further wireless needs arise, you’re kinda hosed.
It’s significantly easier and more practical (e.g. in terms of safety) to just forbid the use of cell phones in the classroom and monitor children. That way, if it really IS an emergency, kids can still find out, and parents don’t get mad about being denied the ability to contact their children when they want to.
You ever heard of a box? It’s crazy but teachers can just ask them to place their phones at the start of class. No fancy stuff needed, went to certain classes in college where the professors hated it and would ask us to put our phones away to take their class (obviously they couldn’t legally keep us from the class that way but I gave it to them cause I didn’t care) mostly worked and kept phones from being common place in those rooms I was in.
Get administrator to agree to buy a big jar of lollipops every other month > Box on desk at front of class > Put phone in box > At end of class pick up phone and take a lollipop.
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