![]() Impact of QR code usage on people with disabilities “If it was using the QR code reader in the camera app rather than a separate app then probably yes”. “I was not 100% happy downloading the app ”, The drawback with using these tags is that it requires that users download a specific application for people to scan them.ĭownloading additional applications may prove a barrier in itself, as one participant stated: The benefits of using NaviLens’ tags is that they can be scanned from much further distances than QR codes due to the simplicity of their designs ( NaviLens state that their tags can be read 12 times further away than a QR code). Similar to QR codes, NaviLens tags are simple graphics formed of squares, using bright colours to stand out and can be scanned to provide users with information. The Web Content Accessibility Guidelines (WCAG) success criterion 1.3.4: Orientation requires that content is not displayed in a way that would mean that users would have to change the orientation of their device for this reason.Īn alternative suggested by a participant is NaviLens. A consistent standard for location is needed eg head height, circa 2m, to left of article to which it relates”.įor infrequent use, locating the QR code seems to be a barrier to people who cannot see the location of the code.įor users who have their device mounted to their wheelchair due to mobility disabilities, pointing their device at a target or holding their device may not be possible or be very difficult to complete. “No problem using QR codes, problem is finding them in the first place. This aligns with another comment from a participant: The participant identifies that there may be inconvenience in learning how to interact with the QR code, but for repeated use, once the interaction is learnt it becomes less difficult. Once I understood what to do it was not difficult”. “The NHS Covid app has been a necessity recently so you just do it however inconvenient it is. 9% found it very easy, and another 9% easy.Ī stand-out positive comment relating to the use of QR codes by a participant was: This included 17% finding it very difficult and 43% finding it difficult versus 18% who found it easy to use QR codes independently. Of the 38 respondents who identified as blind or visually impaired in the VocalEyes study, 60% found it difficult to use a QR code independently. Locating QR codesĪ key aspect of QR codes is knowing they are there and where to locate them. There are 40 different versions of QR code, with the earlier versions being easier to scan due to them storing less information, whereas version 40 can contain up to 3391 characters, but as a result is particularly difficult to scan given the densely packed information and 31329 squares present in the graphic. The ability to scan a QR code is also dependent on the version of QR code used. For example, if a code is 10cm by 10cm, expect that the furthest distance a user would be able to scan it from would be 100cm (both Scanova and Sprout QR recommend this). QR codes can be made as large as needed, as long as the pixels do not become blurred and there are no artefacts interrupting the display of the image.Īs a rough estimate, guides recommend using a ratio of 10:1 for the scanning distance to the size of the QR code. Multiple sources (both QR Code Generator and Sprout QR) report that the minimum size required for a QR code is 2cm by 2cm. They are used for tracking in augmented reality, for joining a wi-fi network, signing into a platform, opening a web page, and other use cases.Ī QR code that when scanned, redirects the user to the BBC's Research and Development page Number of people using QR codesĪ study from VocalEyes (based in the UK) found that 39% of their blind or visually impaired respondents knew what a QR code is, but had not used one, 26% of the respondents had used them aided and 34% had used them independently. QR codes are barcode-like graphics, comprised of machine-readable information that, when scanned, can be translated into a website URL. This blog post explores considerations and provides guidance for creating accessible experiences with QR codes. Quick Response (QR) codes are graphics that can be scanned to direct people online to complete an action or find content.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |