There's no shortage of GPS units for digital cameras out there, especially for Nikon shooters. From the company's own GP-1 to third party units from Dawn, foolography, Solmeta and more, owners of Nikon digital SLRs can select from a smorgasbord of geolocation device options. Few offer remote camera triggering as well, while only one that we know of, the blueSLR module and app from XEquals, turns an iPhone or other iOS device into the trigger unit. The potential benefit of this approach is cool: if your phone is an iPhone, then you'll almost always have your wireless remote trigger close at hand. We review blueSLR.

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