Pen Cap Holes
Did you think that there was something wrong with your pen cap after you noticed that there was a hole in it? Don’t worry, this was done by design. It was added to let air flow freely should it ever get swallowed by an adult or a child. This makes perfect sense to us. After all, there are so many people out there seem to enjoy putting the pen caps in their mouths while they think!
Pen Cap Holes
iPhone Camera Hole
Do you have an iPhone? If so, maybe you noticed that tiny hole right beside the camera lens when you were taking selfies. No, it is not a spy camera but a microphone! After the iPhone 5, all the smartphones from the company have three mics. One is located on the bottom edge, another one under the speaker grill, and the last one beside the lens. This way, you would not have a problem recording sound at all.
iPhone Camera Hole
