Frequently Asked Questions


We are often asked if it's better to use QR Codes or NFC tags. The easy answer would be to always use both, e.g. a combo QR Code with an NFC tag attached to it. However, the real answer is that it depends on the use-case scenario, so here we'll go over some of the differences and typical use cases of both technologies.
May 14th, 2015|Business, FAQ, Features, NFC, QR Code|

What is this Cloud thing?

In case you are still confused by the Cloud, this is an excerpt from the official definition of Cloud Computing by NIST (National Institute of Standards & Technology).

The NIST Definition of Cloud Computing

Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model is composed of five essential characteristics, three service models, and four deployment models.

Essential Characteristics:

On-demand self-service. A consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service provider.

Broad network access. Capabilities are available over the network and accessed through standard mechanisms that promote use by heterogeneous thin or thick client platforms (e.g., mobile phones, tablets, laptops, and workstations).

Resource pooling. The provider’s computing resources are pooled to serve multiple consumers using a multi-tenant model, with different physical and virtual resources dynamically assigned and reassigned according to consumer demand. There is a sense of location independence in that the customer generally has no control or knowledge over the exact location of the provided resources but may be able to specify location at a higher level of abstraction (e.g., country, state, or datacenter). Examples of resources include storage, processing, memory, and network bandwidth.

Rapid elasticity. Capabilities can be elastically provisioned and released, in some cases automatically, to scale rapidly outward and inward commensurate with demand. To the consumer, the capabilities available for provisioning often appear to be unlimited and can be appropriated in any quantity at any time.

Measured service. Cloud systems automatically control and optimize resource use by

August 16th, 2014|Business, FAQ|

Installing a QR Code Scanning App

Quick Response (QR) Codes make it easier for mobile end-users to access information or perform functions with their device without having to read instructions or type commands. And they are universally supported in all smartphones and tablets.

In order to read a QR Code you need to have a QR Code scanning app installed in your mobile device. Some devices come with a factory installed QR Code app (e.g. SmartTags in BlackBerry v7 and v10).

To find and install a QR app in other mobile devices, click the following link and watch the instructions provided in the short, 35-second video that corresponds to your smartphone or tablet:

>>> How To Guides: Installing a QR Code App on your Smartphone or Tablet <<<

August 16th, 2014|Business, FAQ, QR Code|

Does GreenRack work with RFID?

Yes and no, but let's say no
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.
March 1st, 2014|Business, FAQ, Features, NFC|

How to reach Users that are Mobile

Yes, I purposefully avoided saying “Mobile Users”. The reason is that being mobile implies much more than carrying a mobile device, which is how manufacturers of mobile technology gear have tried to define that segment of the market. People that are on the move is probably a better way to characterize it.

Users on the Move have some key characteristics that make reaching them a totally different challenge than your traditional audience watching TV from a couch, or cruising the web at a desk. People on the move typically become “mobile users” while they are going somewhere, or while they are waiting for something. They may also be spending time away from their usual places, e.g. at a conference, out shopping, or away on vacation.

Because of their context and circumstances, these users have special requirements:

They don’t have a lot of time, therefore they have a short attention span and not a lot of patience.
They need to find very specific information (an address, a price; not a whitepaper)
They need fast, actionable information (how to get there, how to purchase)
They are mostly consuming information, not generating extensive content (although their aggregate behavior may generate interesting big data)
They have limited technology, in the best of cases. Not everybody walks around with smartphones and tablets. And even less people know how to use them for more than phone calls and messaging.

Designing a system or service that targets users on the move is not a trivial challenge. In fact, the technology is probably the easiest problem to tackle: for the most part we know how to deal with it. Unfortunately, many organizations stop thinking at this point: they plaster a QR Code that takes you to the home page of

February 25th, 2014|Business, FAQ|