Sure it would work,just glue the lens behind the metal eyelet using hotmelt glue. Not sure what kind of quality you get with the one you posted, but the mate808 extended lens cams work great and can be bought under $30. If you want very high quality videos, this cam is very good, but definitely needs a usb power supply.
I used a similar method but I used a "button" style lens cover then put it behind a mesh section of a toiletry bag.
I get so paranoid that even the slightest reflection from a lens may raise an eyebrow or even worry that someone might just end up with their face close to it and notice something irregular.
It doesn't help when you have the mind of a perv and know what to look for compared to the average person who wouldn't expect anything like this.
Hello genius. Are you in USA, and would you be interested in selling these setups for a reasonable price?
While it can be effective, the recording quality can be really shit, and considering the size, battery life can also be shit. At least with the "module" type cameras, you can get 1080 resolution, but more importantly, a clearer image. You can also get a beefier battery or even attach a powerbank as shown above.
It's kinda sad in a way with technology these days. If only the technology we have today was around 10-15 years ago when I was younger. Instead a lot of my voyeur experiences were unrecorded and involved having to use a mirror to look under a bathroom door and see everything upside down.