Update: It looks like Amazon only bought certain technologies and hired certain talent from Gopago, while Doublebeam actually acquired the rest.
According to reports, Amazon has acquired Gopago, a PoS solutions company.
Gopago's slogan is "modern commerce now affordable." It offers mobile and tablet PoS solutions associated apps.
According to reports, the terms of the deal were not disclosed and co-founder Vincenzo di Nicola will not be joining Amazon, though that may also be true for others at the company.
It's unclear when the acquisition actually took place. Gopago has been pretty quiet lately. The company blog has't been updated since June.