That's why lens placement is usually done in a manner that puts it away from your hand when designing a camera. A camera that puts the lens behind your palm when holding it like any other cameras would be a design flaw.
Hence why no camera is designed to have the lens placed anywhere near your hand while holding it naturally.
If I grab my iPhone like I grip my 35mm SLR, landscape, tightly along the left side, with my right hand free for the shutter button, it puts the iPhone's camera lens behind my fingers. There are also a few slim P&S cameras that have the lens in this same corner.
No camera? Wrong.