Why We Should All Be Using the Encrypted Chat App Signal | WIRED. What looks like a messaging app, walks like a messaging app, acts like a messaging app; but, is much more? Why, Signal, of course. I have recommended it before for really secure, encrypted messaging that everyone should be using as their only messaging app. This article makes that argument; but, also considers that using different apps for texting can create confusion and lack of communication. In fact, Signal acts just like any other messaging app if you are using it with someone who isn't also using it. So, if someone else sends you a text, you get it just as you do the encrypted ones. But, you need to tell anyone with whom you want secure communication to download and use ti also. That way, you can make your messages disappear after a set time, or after being read, and you can call back messages if necessary. Most importantly, your communications will be secure. Really. And, it is free. Every time I read about some celebrity or politician or FBI agent being embarrassed by the release of a text message string, I wonder why their IT people didn't tell them about Signal. Jeez.