GPS

Location tagging on AirLeak Pro can come from two places: an optional on-board GPS module, or your phone's GPS through the ZeroTrace app. You do not need the module to tag captures — it exists for standalone, phone-free surveys.

What the GPS enables#

Location, from either source, is what turns a scan into a survey. Every access point and Bluetooth device AirLeak Pro hears can be stamped with where it was heard and an accurate timestamp. That makes three things possible:

• Location-tagged surveys, so you know not just what is present but where.
• Wardriving, walk or drive a route and map everything along it. See GPS & wardriving.
• Mapping-ready logs, the saved file carries real coordinates, so it imports straight into survey and mapping tools. See Logging.

With the on-board module fitted, AirLeak Pro can do all of this standalone — no phone in range — and the module's precise time reference keeps log timestamps accurate offline. With the app instead, the phone supplies both the location and the time.

The GPS interface#

The optional module connects through a small on-board interface (with its own antenna):

Getting a fix#

With the module fitted, a cold start can take a minute or two and needs a reasonably clear view of the sky; after that it stays locked as you move. When you rely on the phone instead, a fix follows your phone's own GPS. Either way, the app shows whether a location fix is currently available.