To link out to a digital copy of your poster with a QR code, please consider the following steps:
QR codes are images that contain redirect information to a URL, such as a website or a file. These codes can be read by most cameras on iOS and Android mobile devices and are useful for sharing especially long or unfriendly URLs that contain many random digits or symbols.
For this reason, QR codes are ideal for inclusion in a presentation poster for directing your audience to a related website, profile page, or publication.
QR codes can be generated in a number of different ways, and are offered as a service by many websites. They may also be generated using a chromium based web browser, such as Google Chrome or Microsoft Edge.
Using one of the browser method is strongly recommended as QR codes are just hashed representations of a URL whose details aren't visible until you attempt to travel to the URL. Website generated QR codes are not guaranteed to be safe/reliable, and should at least be tested before used or shared in case it attempts to direct a user to a malicious website. Website QR codes may also contain references that allow for tracking data by whatever website generated them.
The QR code for the Dykes Library homepage: https://www.kumc.edu/dykes-library.html