HTC One M8 for Windows - Manual (Page 169)

and you'll need to enter them again next time you reconnect to this Wi-Fi
network.
Wi-Fi Sense
Easily get an Internet connection without setting up Wi-Fi everytime. The
abundance of open Wi-Fi hotspots makes it possible to gain Internet
connectivity without using much of your data plan. With Wi-Fi Sense, you
can automatically connect to over a million open Wi-Fi hotspots around
the world. You can also choose to share access to secured Wi-Fi hotspots
with contacts using Wi-Fi Sense.
1. Swipe down from the top edge of the screen with one finger.
2. Tap All settings > Wi-Fi.
3. Tap Wi-Fi Sense.
4. Turn on the features you want to use, such as connecting to Wi-Fi
hotspots or sharing Wi-Fi hotspots.
Connectivity 169