Yes and no, but let’s say noTag-It RFID Tag

GreenRack works by managing the interaction of end-users with web URLs (linked to content), regardless of how those URLs are presented to the user.

Typical ways of presenting URLs include: printed QR Codes, NFC tags on smart posters, hyperlinks on a web page or on emails, hyperlinked maps or images on a touchscreen, shortened URLs that are easier to type (e.g. bit.ly), etc.

From this point of view, RFID technology is supported by GreenRack… but…

The challenge, is that you would need RFID tags to encode the URLs, and RFID readers to read the tags.
Passive RFID tags are approx the same price as NFC tags, however RFID readers can be pretty expensive (from $60 to $2,000) and have to be integrated with a computing device (for example a smartphone).

On the other hand, virtually all smartphones and tablets these days are able to read QR Codes (with free software and the built-in camera), and many current smartphones and tablets (with the notable exception of Apple’s iPhone and iPad) already ship with built-in NFC readers and software. This translates into minimal logistics issues and much lower cost to prepare, deploy, and support.

If you are considering Active RFID tags, they are much more expensive than NFC tags. But more importantly, there is what you could consider a philosophical difference in these approaches: NFC allows you to track user-initiated interactions, with clear knowledge and participation of the audience.
Active RFID allows you to track users without their knowledge or participation, which gives rise to privacy concerns and may be negatively perceived by the target users.
In other words, with QR/NFC we tag the content; with active RFID you tag the person.

[NB. see our related posts about NFC, NFC vs QR, and NFC vs RFID.]