While fishing, boating and hanging out at the beach is fun, it can sometimes lead to a loss of personal items.

Step 1: Grab your current glasses, your smartphone and a credit card (or any other plastic card that's the size of a credit card -- it's used to calibrate the app, not for payment). Then, plunk down ...

Are you a sharp observer? Let's find out. The image above shows a table full of vegetables. A set of glasses blends so seamlessly with the vegetables. Can you spot the glasses in 7 seconds?

As a glasses wearer with a strong prescription ... I just really enjoy being underwater and helping people find stuff they thought was permanently lost.” ...