Can be worn on the back. Before that I tried several others to block the front camera of our phones. I don't like this light on until I ask. At least two sliders fell off and were never returned. I have blockers for every phone, tablet and laptop we have. I've found sliders that work reasonably well with other things, but those are the only ones I'm happy with for phones. The reason is that you can put them back on even if they fall off. And it stays. You can not ask for more. I hope this will be helpful for someone.
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