Nexus 4 Smart Lock Trusted Places is not there! I have just updated to Lollipop on my Nexus 4 and can't see "Trusted Places". I use "Trusted Face" which works pretty well, but I would like to use "Trusted Places" at work. However, it is not there.

I have rebooted, but it is still not there. I have looked for the Google Play Services. I cannot find it under Apps, but Google Play says I have it installed.

Can anyone help me?
Sometimes you have to activate the Trust Agent:
Settings -> Security -> Trust Agents -> enable Smart Lock