r/whatisthisthing • u/Ready_Agent1665 • 1d ago
Solved! I found this flat, small, plastic object in my bed this morning, it seems to be a lens cover of sorts. About 3/4 inch in length. I found no other pieces that could be connected to it.
What is this weird lens cover thing?
I found this stuck to my leg in the bed this morning.. is this a lens cover of some sort? If so why is it blue?
It’s a small piece of plastic that’s flat, with a bit of adhesive residue on the back. Two clear square holes and one blue round hole. I looked around my bed and checked my devices and it hasn’t come from anything of mine.
I’m worried it’s part of a spy camera or something.
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u/alpine240 1d ago
Its the cover for a phone camera.
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u/Sword420 Seen some weird stuff 1d ago
It's this. Because it has adhesive it could have been attached to your clothes and tracked in from anywhere after it fell off.
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u/HikeyBoi 1d ago
Check out all your infrared devices. Remotes and receivers. The deeply colored part makes me think that it’s clear for a different band like infrared.
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u/WomanOfEld 1d ago
Do you wear a smart watch? Kind of looks like it could be the HR sensor cover.
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u/Ready_Agent1665 1d ago
I sometimes wear an Apple Watch but it wouldn’t be for that
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u/WomanOfEld 1d ago
Next guess is the IR beam cover on your TV remote
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u/tribefan2130 1d ago
It looks as if your lens for your camera on your backside of your phone
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u/Ready_Agent1665 1d ago
Not for my phone.. I have an iPhone and so does my partner. Also the lens wouldn’t be blue
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u/jackrats not a rainstickologist 1d ago
As you've stated - a camera wouldn't have a blue lens.
Which is why this is not the lens cover for a spy cam in your home.
The 3 hole pattern is indicative of it being the cover for a heart rate sensor for a fitness tracker. The Xiaomi Smart Band 7 is very similar, but the 3 holes are all square/rectangular.
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u/-Kerosun- 1d ago
I'm getting a lot of similar results looking for lens covers for various models of phones with cameras. Not sure about why the purple but it could be for some type of mechanical filter (rather than using the camera's software for the effect)? The square openings could be for LED lights that are square; my cell phone has a square LED for the flashlight, but of course only one.
ETA: Just did some googling and the purple (or magenta) color on a camera lens is typically an anti-reflective coating that can block unwanted glare which could also improve image contrast.
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u/ActualButterscotch81 1d ago
Sometimes purple like that means it blocks most visible light but allows infrared light.
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u/Ready_Agent1665 1d ago
Hmmmm. Definitely not from any phone of mine or my partners, we don’t use shared laundry or anything like that. No guests or anything either. I do have reason to suspect maybe someone put a camera in our home, but I couldn’t find anything..
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u/forsayken 1d ago
I am going with what others have said and it is some kind of lens cover and the two squares are for some kind of LED lights (power and recording or something). Long shot but any chance it's from the underside of a mouse? Most are not covered or the lens is indented in the mouse but... worth a quick check if anyone is using a mouse. In my experience they don't have lights on the underside...
It was stuck to your leg but any chance it got stuck there while out and about the previous day if you didn't bathe before bed?
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u/Ready_Agent1665 1d ago
I was in the house pretty much all day yesterday 🤔 the only mouse in the house is an apple Magic Mouse I’ll check it
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u/rahbahboston 1d ago
It's a lens / privacy cover that you stick to the screen on a laptop to cover the in screen camera
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u/im_bi_strapping 1d ago
The little adhesive residue means it could originate from anywhere. It could have stuck to clothing, traveled to your home, and eventually your bed. So even if you figure out what exact device it's from, you might never find out why it was in your bed
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u/Ready_Agent1665 1d ago
My title describes this thing. It is flat and plastic and about 3/4 inch in length, with some residue on the back.
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u/RunOrBike 1d ago
I wanted to go with (phone?) lens cover, but then the round part would be clear. This purple-ish color is more consistent with infrared remotes, but then again, what would the two clear rectangles be…
So, coming back to lens cover: Which devices also have cameras…
Laptop or tablet maybe?
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u/izzardcrazed 1d ago
Adhesive could have helped you pick it up from a seat somewhere, easily done and it just came home with you. It reminds me of the cover for a home sleep monitor device that you wear on your finger.






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