Autocorrect has become an indispensable tool for texting quickly, but it can also lead to some pretty humiliating errors. Apple has an idea that could prevent such blunders: Alerting participants in the conversation when a word has been corrected, as a recently published patent application from the company outlines. The document, which was first spotted by blog Apple Insider, proposes a feature that would visually distinguish specific words in a text message that have been autocorrected.