Apple has submitted a patent that describes a better method of detecting water in an electronic device. In other words, Apple has devised a way to know if your iPhone has been in a pool (for example) before you try to return it to an Apple Store as defective. The patent describes a method of covering up an internal electronics sensor with a glob of water-soluble glue, which dissolves and reveals the sensor when exposed to water. The appearance of the sensor would tip off anyone examining the phone to water exposure. There are a number of different methods described in the patent, but they all follow that basic idea. I question this research. Should Apple dedicate so much time and effort into uncovering customers' mistake