A mechanism is described for facilitating smart geo-fencing-based payment transactions according to one embodiment. A method, as described herein, includes detecting, by one or more capturing/sensing components of a data processing device, a first computing device within proximity of a geo-fenced location. The method further includes receiving detection information relating to the detection of the first computing device, authenticating at least one of the first computing device and the geo-fenced location, and interfacing the first computing device with a second computing device. The method may further include facilitating a payment transaction, where the payment transaction includes payment of a monetary amount from the second computing device to the first computing device, and executing the payment transaction.