It is possible to check the WiFi encryption type on Windows, Mac, and Android devices. It is not possible to check on iOS devices without third party software.
Android:
- Navigate to Settings and WiFi
- Touch on the network you are correctly connected to and select View
- You will find your security encryption type under Security
OSX:
- Navigate to System Preferences and select Network
- Make sure WiFi (or Airport) is selected and highlighted and click Advanced at the bottom right
- You will find your security encryption type listed as Security under the WiFi tab
Windows PC:
- Click on the wireless indicator at the bottom right corner of the screen
- Hover over the network you are connected to and it will display the security encryption type under Security Type