but there are working great for my front and back cameras for all 3 of my laptops

These work well to cover the webcam on my labtop.

These are working great for us.

The slide on the cover works very well and is great for quickly covering/ uncovering the camera.

This worked great for all of them.

These work well to cover the cameras on my tablet

Ordered this device and at first worked great, the product itself is fine, but when you close your laptop it has the potential to crack the screen like it did with mine