Airtag (styled as AIRTAG) is a French company that provides mobile shopping solutions and secure payment applications for retailers and banks.
The company offers mobile ordering, loyalty, couponing and payment solutions. NFC retail outlets in McDonald’s outlets across France. They also implemented MasterCard’s PayPass SDK. Their business model is “providing white-label solutions for retailers and restaurants”.
I’m currently working there as a Symfony developer on the many solutions including the loyalty system.