• identity management, ID document reader, ID processing, differences, ARH
USB scanners, network scanners, image capture, authentication, ARH

PASSPORT READERS – USB OR NETWORK?


Thursday, 31 May 2018 11:06

A guide to pick the right scanner

When you prepare a project, you have to consider all aspects. Technical compliance, compatibility, expenses, delivery deadlines are just a few. When working on an identity management project, there is a multitude of ID document readers to select from. Which one is your best choice? Do you need a USB scanner or a network scanner? This guide is going to highlight technological differences and help you decide which passport reader to choose, depending on the nature of your project.

Today’s passport readers come in 2 kinds:

  • conventional scanners, which capture images of the ID and forward these images to a computer via a USB connection;
  • all-in-one scanners, which process images on-board – and some models also forward the results via the network.
As a rule, the available functions do not depend on where image processing is done – tech differences, however, are many. Make sure to pick the right scanner as early as the planning phase.


USB scanners, network scanners, image capture, authentication, ARH
Fig. 1: ID processing – external vs. onboard
While USB scanners capture images and send them to the PC for data processing, a scanner with onboard processing performs all these three tasks on its own. Communication channels are shown above.

IT security policies

Your best choice of scanner depends a lot on the end user system. There are often strict IT regulations to observe. For instance, some corporate policies restrict the use of peripherals connected via a USB port, and they also restrict the installation of drivers on client computers. In this case, an all-in-one ID scanner is your perfect choice. Needing no PC connection, all-in-one ID scanners send results directly to a remote server with convenient web access.


Thin clients

Likewise, all-in-one scanners could be your preferred choice for thin clients, where no sufficient processing capacity is available on the client side. All processes are performed inside the scanner. Produced results are accessible through a desktop computer, thin client or even a tablet or smartphone.


Shared usage

In many office environments, archiving or authentication is a high priority. Sometimes – rather than having a scanner next to every single computer – there are systems with 1 or 2 shared scanners in total. This type of usage is easier with an all-in-one scanner. No need for a dedicated computer to receive scanning results, personnel can direct the automatic transfer of results to their own office computer, perhaps by identifying themselves with their own proximity card.

There’s more. Continue below to see some other aspects.

USB scanners, network scanners, image capture, authentication, ARH
Fig. 2: Data access with onboard scanners: direct or server-based
In case of network scanners, the client can either access the device directly, to have an up-to-date view of what processes are performed, or, alternatively, the system can be programmed for automatic server upload and the client can access all results via this server.

Costs?

Think twice to choose processing inside the scanner if a computer connection is available, because you can use this computer to process data. This, of course, may go against other considerations like the IT restrictions described above. In general, integrated processing is more economical than having a separate PC with monitor, plus all the required software licenses.


Operating system compatibility

The other competitive edge of all-in-one scanners is multi-platform compatibility: the available operating system is not a limiting factor, as the scanner uses its own internal OS. Results will be displayed on the user’s screen, regardless of the operating system in use. No need to worry about Windows or Linux compatibility. All-in-one scanners offer seamless integration and platform-independent functionality.


Speed

If speed is a decisive factor, your best bet is a high-performance computer to process the information. The larger the volume of data, the more processing power is needed. Of course, a simple MRZ reading is fast anyway, but more complex tasks – like RFID reading and in-depth authenticity checks – may cause significant speed difference, even seconds per identity document. Given the current trend of steadily increasing processing power of computing boards, in a few years’ time this will no longer be an issue.

Did you know that ARH offers both types of scanners? Browse our portfolio of USB scanners and our newest product line, network scanners.