Google has announced an update to the My Location feature of Google Maps for Mobile that uses Wi-Fi to help pinpoint your location more accurately. Which begs the question, how does Google know where your router is?

The new version of Google Maps and Google Maps for Mobile figures out your location based on nearby Wi-Fi access points as well as mobile phone transmitters. And since Wi-Fi has a smaller range, this means it can pinpoint you more accurately.

The feature only works with BlackBerry devices for now, but support for the T-Mobile G1 and others are coming soon.

Do Google’s spy satellites and Wi-Fi tracking tech creep you out? Let us know in the comments box below.

Out now | £free | Google Maps for BlackBerry (via Google Mobile Blog)