How can I provide guests with Wi-Fi without giving them my password?

Noel intends to register on AirBnB and wants to offer porn-free internet access without giving away all his security details

I intend to register on AirBnB and I'd like to know how to share my fibre optic internet connection safely, without giving out the main Wi-Fi password. I believe some routers have guest access features, but not the one I use: a BT Home Hub 3. I am also thinking about OpenDNS as an additional option to screen out pornography etc. I am open to buying another router if necessary. Noel

This is a topic that should interest people renting out their homes and small businesses that want to offer clients free Wi-Fi access - I wish my dentist did, for example.